Since the ratio of the number of coins is 10:8:5 Let The number of coins of 1 rupee = 10x ;the number of coins of 50 paise = 8x ;the number of coins of 25 paise = 5x Value of 50 paise coins =
8x
2
(as there two 50 paise coins in 1 rupee) Value of 25 paise coins =
5x
4
(as there four 25 paise coins in 1 rupee) Now, 10x+4x+
5x
4
=976 x=64 So, the number of 25 paise coins = 5 × 64 = 320