Quant Exam  >  Quant Questions  >  A sum of Rs. 36.90 is made up of 90 coins tha... Start Learning for Free
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,
  • a)
    47
  • b)
    43
  • c)
    27
  • d)
    63
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coi...
Let coins of 20 paisa be x
and let coins of 50 paisa be y
convert the 36. 90 RS in paisa
it will be 3690 paisa
means
20x+50y=3690 ... (1)
x+y=90 ... (2)
multiply (2) by 50 on both sides we get
50x+50y=4500
subtract (2) from (1)
20x+50y=3690
50x+50y=4500
-30x=-810
x=-810/-30
x=27
the number of coins of 20 paisa are 27
View all questions of this test
Most Upvoted Answer
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coi...
Given:
Total sum = Rs. 36.90
Total number of coins = 90

Let's assume the number of 20 paise coins to be x
Then, the number of 50 paise coins will be (90-x)

We can now form the equation:
0.20x + 0.50(90-x) = 36.90
0.20x + 45 - 0.50x = 36.90
-0.30x = -8.10
x = 27

Therefore, the number of 20 paise coins is 27.

Answer: Option C (27)
Free Test
Community Answer
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coi...
The average value of a coin is 41 paise and there are only 20 paise and 50 paise coins in the sum. Hence, the ratio of the number of 20 paise coins to 50 paise coins would be 9:21 = 3:7. Since there are a total of 90 coins, the number of 20 paise coins would be 3 x 90/10 = 27 coins.
Explore Courses for Quant exam
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer?
Question Description
A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. 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 A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer?.
Solutions for A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. 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 A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer?, a detailed solution for A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A sum of Rs. 36.90 is made up of 90 coins that are either 20 paise coins or 50 paise coins. Find out how many 20 paise coins are there in the total amount,a)47b)43c)27d)63Correct answer is option 'C'. 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.
10M+ students study on EduRev