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Question

The incomes of A, B and C are in the ratio 7 : 9 : 12 and their spendings are in the ratio 8 : 9: 15 If A saves 14th of his income then the savings of A, B and C are in the ratio

A
56 : 99 : 69
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B
69 : 56 : 99
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C
99 : 56 : 69
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D
99 : 69 : 56
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Solution

The correct option is A 56 : 99 : 69
Let the incomes of A,B and C be 7x, 9x and 12x respectively.
Let the expenditures of A,B and C be 8y, 9y and 15y respectively.
Savinge of A,B and C are 7x-8y,9x-9y and 12x-15y respectively.
Given, 7x8y=14×7x7x7x4=8y21x4=8yy=2132x Savings of A,B and C are
7x4:9x9×21x32:12x15×21x32i.e.,7x4:(288x189x)32:(384x315x)325632:99x32:69x3256:99:69

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