Ratio, Proportion

Math and Mental Ability

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Some Rs. 1, 50 paise and 25 paise coins make up Rs. 93.75 paise and their numbers are in the proportion 3 : 4 : 5. Find the number of each type of coins.

40, 70, 75

46, 58, 75

42, 56, 70

45, 60, 75

Explanation:

let no. of coins of 1 rupee - x
let no. of coins of 50 paisa - y
let no. of coins of 25 paisa - z
so, x+.5y+.25z =93.75
x:y:z =3:4:5
converting equation into y terms,
x= 0.75y, z= 1.25y
25/16y=93.75
y = 60
x= 45
z= 75

Hence, option 4 is the correct answer.

By: Amit Kumar

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