All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 7 Exam  >  Class 7 Questions  >  The price of commodity X increases by 40 pais... Start Learning for Free
SaveJoin the Discussion on the App
The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?
  • a)
    2010
  • b)
    2011
  • c)
    2012
  • d)
    2013
Correct answer is option 'B'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Verified Answer
The price of commodity X increases by 40 paise every year, while the p...
Suppose commodity X will cost 40 paise more than Y after Z  years. Then,
► (4.20 + 0.40Z) - (6.30 + 0.15Z) = 0.40
► 0.25Z = 0.40 + 2.10
► Z = (2.50 / 0.25) = 10
∴ X will cost 40 paise more than Y 10 years after 2001 i.e in 2011.
View all questions of this test
Most Upvoted Answer
The price of commodity X increases by 40 paise every year, while the p...
Given data:
- Price of commodity X increases by 40 paise every year.
- Price of commodity Y increases by 15 paise every year.
- In 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30.

To find: In which year commodity X will cost 40 paise more than commodity Y.

Solution:
Let the required year be n years after 2001.
- The price of commodity X after n years = Rs. 4.20 + 0.40n.
- The price of commodity Y after n years = Rs. 6.30 + 0.15n.

We have to find the value of n for which commodity X costs 40 paise more than commodity Y.
- Rs. 4.20 + 0.40n = Rs. 6.30 + 0.15n + 0.40 (as the price of X is 40 paise more than Y)
- 0.40n - 0.15n = Rs. 6.30 - Rs. 4.20 + 0.40
- 0.25n = Rs. 2.50 + 0.40
- 0.25n = Rs. 2.90
- n = 11.6

Therefore, commodity X will cost 40 paise more than commodity Y in the year 2001 + 11.6 years = 2012 (approx).

Hence, the correct answer is option (b) 2011.
Free Test
FREE
Start Free Test
Start Free Test
Community Answer
The price of commodity X increases by 40 paise every year, while the p...
Suppose commodity X wil cost 40 paise more than Y after Z years. Then,

(4.20 + 0.40Z) - (6.30 + 0.15Z) = 0.40

=> 0.25Z = 0.40 + 2.10 => Z= 2.50/0.25 = 10

Therefore, X will cost 40 paise more than Y 10 years after 2001 . i.e in 2011
Attention Class 7 Students!
To make sure you are not studying endlessly, EduRev has designed Class 7 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 7.
< Previous Question Next Question >
Explore Courses for Class 7 exam

Similar Class 7 Doubts

Read the news article and answer the questions that follow.Onion Prices to Rise FurtherMUMBAI, 24 AUGUST 2015: Onion prices, which are already ruling at around Rs 80 per kg in most parts of the country, are likely to increase further by 10 per cent on tight supplies due to unseasonal rains affecting the crops. “The situation is going to be more critical in future and we expect the price will go up by another 10 per cent in the coming days because the current crop, which is expected to hit the market next month, might be affected due to scanty rainfall,” Bombay APMC Director Ashok Valu.Onions imported from Pakistan are already in the market and the lot from Egypt would hit the market next week, he said, but added that this would not help much in bringing down the prices. “The 100-200 containers, 30 tonne each, of onions imported will be distributed in the entire country.Mumbai itself needs 80-100 trucks daily, each containing 12 tonnes. Moreover, our domestic stock is also depleting fast. So imports will not be able to bring down the prices,” he said.The wholesale price of onion has risen to around Rs 60 per kg at Lasalgaon in Maharashtra while it is already selling at around Rs 80 per kg in retail markets.About 700 kg of onion worth Rs 50,000 was allegedly stolen from a shop in suburban Mumbai, the police said yesterday. In Nashik, a farmer complained to the Nandgaon police that about 2,000 kgs of onion was stolen from his place. Despite the government taking measures, prices have gone up unabated both in the wholesale and retail markets across the country in the last few weeks due to tight supply following shortfall in the domestic output.Q.What is the price of onion at Lasalgaon?

Read the news article and answer the questions that follow. Onion Prices to Rise Further MUMBAI, 24 AUGUST 2015: Onion prices, which are already ruling at around Rs 80 per kg in most parts of the country, are likely to increase further by 10 per cent on tight supplies due to unseasonal rains affecting the crops. “The situation is going to be more critical in future and we expect the price will go up by another 10 per cent in the coming days because the current crop, which is expected to hit the market next month, might be affected due to scanty rainfall,” Bombay APMC Director Ashok Valu.Onions imported from Pakistan are already in the market and the lot from Egypt would hit the market next week, he said, but added that this would not help much in bringing down the prices. “The 100-200 containers, 30 tonne each, of onions imported will be distributed in the entire country.Mumbai itself needs 80-100 trucks daily, each containing 12 tonnes. Moreover, our domestic stock is also depleting fast. So imports will not be able to bring down the prices,” he said.The wholesale price of onion has risen to around Rs 60 per kg at Lasalgaon in Maharashtra while it is already selling at around Rs 80 per kg in retail markets.About 700 kg of onion worth Rs 50,000 was allegedly stolen from a shop in suburban Mumbai, the police said yesterday. In Nashik, a farmer complained to the Nandgaon police that about 2,000 kgs of onion was stolen from his place. Despite the government taking measures, prices have gone up unabated both in the wholesale and retail markets across the country in the last few weeks due to tight supply following shortfall in the domestic output. Q.How much onion does Mumbai need on a daily basis?

Top Courses for Class 7View all

Top Courses for Class 7

The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer?
Question Description
The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer?.
Solutions for The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 7. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.
Here you can find the meaning of The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?a)2010b)2011c)2012d)2013Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 7 tests.
Explore Courses for Class 7 exam

Top Courses for Class 7

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup