AFCAT Model Paper 6

Given:
Re. 1, Rs. 5, and Rs. 10 Coins are in the ratio 3 : 5 : 7
Total value of coins in the box is Rs. 294.
Calculation:
Let the number of coins of Rs. 1, 5 and 10 rupees be 3x, 5x, and 7x respectively
Total value of coins = (3x × 1) + (5x × 5) + (7x × 10)
⇒ 3x + 25x + 70x = 98x
⇒ 98x = 294
⇒x=

294

98

=3
⇒ Total value of coins of Rs. 10 = 3 × 70 = Rs. 210
∴ Total number of coins =

210

10

=21