Multiple choice

Riya has Rs. 320 in her wallet in the denominations of Rs. 10 and Rs. 5 notes only. The ratio of the number of Rs. 10 notes to Rs. 5 notes is 11 : 10. How many Rs. 5 notes are there in her wallet?

  1. 10

  2. 20

  3. 15

  4. 25
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let number of notes be 11x and 10x. Total value = 10(11x) + 5(10x) = 110x + 50x = 160x. 160x = 320, so x = 2. Number of Rs. 5 notes = 10 * 2 = 20.

AI explanation

Let the number of Rs. 10 notes be 11x and the number of Rs. 5 notes be 10x. The total amount is calculated as 10 times 11x plus 5 times 10x, which equals 110x plus 50x, giving 160x. Since the total amount is Rs. 320, we set 160x equal to 320, which means x equals 2. The number of Rs. 5 notes is 10x, so multiplying 10 by 2 gives 20 notes.

Keep practicing — related questions