Question 130

The incomes of A, Band C are in the ratio 7 : 9 : 12 and their spendings are in the ratio 8 : 9 : 15. If A saves 1/4 th of his income, then the savings of A, B and C are in the ratio of

Solution

let the income of A , B , C be 7a, 9a, 12a

and expenditure be 8b, 9b, 15b respectively

saving of A = 7a - 8b

savings of B = 9a - 9b

saving of C = 12a - 15b

given that 7a - 8b = 7/4 a

28a - 32b = 7a

21a = 32b

b = 21/32a

ratio of saving of A , B , C is :-

7/4a : 99a/32 : 69/32a

56 : 99 : 69

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