54. A box contains 280 coins of one-rupee, 50-paiseand 25-paise. The v

1.	54. A box contains 280 coins of one-rupee, 50-paiseand 25-paise. The values of each kind of the coinsare in the ratio of 8 :4:3. Then the number of50-paise coins is(a) 80(c) 70(b) 90(d) 60
Answer» Rs. 1 : 50P : 25P Value of coins 8x : 4x : 3x No. of coins8x×1:4x×2:3x×4 8x:8x:12x ∴Totalcoins∴Totalcoins => 8x + 8x + 12x = 28x 28x = 280 (given) x=10 ∴Number of 50 P coins=8x=80 Option a is correct.

54. A box contains 280 coins of one-rupee, 50-paiseand 25-paise. The values of each kind of the coinsare in the ratio of 8 :4:3. Then the number of50-paise coins is(a) 80(c) 70(b) 90(d) 60

Answer»

Rs. 1 : 50P : 25P

Value of coins 8x : 4x : 3x

No. of coins8x×1:4x×2:3x×4

8x:8x:12x

∴Totalcoins∴Totalcoins

=> 8x + 8x + 12x = 28x

28x = 280 (given)

x=10

∴Number of 50 P coins=8x=80

Option a is correct.