Quant Exam > Quant Questions > Petrol prices are reduced by 20%. Find by how...
Start Learning for Free
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.
- a)20%
- b)25%
- c)42%
- d)None
- e)All of the above
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Petrol prices are reduced by 20%. Find by how much percent a vehicle o...
Let petrol price - 100 ,
after deduction - 80
petrol consumption - 100 ,
Petrol consumption after deduction - x.
Total Expenditure = 100 × 100 = 80 × x
= x =10000/80 = 125
consumption increased = 125 - 100 = 25
percentage increased = 25% of 100
after deduction - 80
petrol consumption - 100 ,
Petrol consumption after deduction - x.
Total Expenditure = 100 × 100 = 80 × x
= x =10000/80 = 125
consumption increased = 125 - 100 = 25
percentage increased = 25% of 100
Free Test
FREE
| Start Free Test |
Community Answer
Petrol prices are reduced by 20%. Find by how much percent a vehicle o...
Solution:
Let's assume that initially, the cost of petrol is Rs. 100
After a 20% reduction, the cost of petrol becomes Rs. 80
To keep the cost of petrol constant, the vehicle owner needs to increase his consumption of petrol. Let's say the vehicle owner initially consumed x liters of petrol.
Now, the cost of petrol per liter = 100/x
After the reduction, the cost of petrol per liter = 80/x
To keep the cost constant, the vehicle owner needs to consume y liters of petrol, where
100/x = 80/y
y = (4/5)x
Therefore, the vehicle owner needs to increase his consumption of petrol by (1 - 4/5) = 1/5 or 20%
Hence, the correct option is (b) 25%.
Note: It is important to understand that the percentage increase in consumption of petrol is always greater than the percentage reduction in petrol prices to keep the expenditure constant. In this case, the percentage reduction in petrol prices is 20%, but the percentage increase in consumption of petrol required to keep the expenditure constant is 25%.
Let's assume that initially, the cost of petrol is Rs. 100
After a 20% reduction, the cost of petrol becomes Rs. 80
To keep the cost of petrol constant, the vehicle owner needs to increase his consumption of petrol. Let's say the vehicle owner initially consumed x liters of petrol.
Now, the cost of petrol per liter = 100/x
After the reduction, the cost of petrol per liter = 80/x
To keep the cost constant, the vehicle owner needs to consume y liters of petrol, where
100/x = 80/y
y = (4/5)x
Therefore, the vehicle owner needs to increase his consumption of petrol by (1 - 4/5) = 1/5 or 20%
Hence, the correct option is (b) 25%.
Note: It is important to understand that the percentage increase in consumption of petrol is always greater than the percentage reduction in petrol prices to keep the expenditure constant. In this case, the percentage reduction in petrol prices is 20%, but the percentage increase in consumption of petrol required to keep the expenditure constant is 25%.
|
Explore Courses for Quant exam
|
|
Similar Quant Doubts
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer?
Question Description
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer?.
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Quant.
Download more important topics, notes, lectures and mock test series for Quant Exam by signing up for free.
Here you can find the meaning of Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.a)20%b)25%c)42%d)Nonee)All of the aboveCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Quant tests.
|
|
Explore Courses for Quant exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup