Question

income of a b and c are in the ratio of 7:9:12 and their respective expenditure are in the ratio of 8:9:15 if a saves 1/4 of is income then the ratio of their savings is....​

Answer 1

Answer:

56:99:69

Step-by-step explanation:

Ratio of incomes of A: B : C = 7 : 9:12

Ratio of spending of A: B: C = 8:9: 15

Let incomes of A, B & C = 7x, 9x & 12x respectively

Let spending of A, B & C = 8v, 9y & 15y respectively

According to the question,

7x 8y =

4

1

×7x⇒7x−

4

7x

=8y

4

21x

=8y→

y

x

=

21

32

Saving of A = 7 × 32 - 8 × 21 = 56

Saving of B = 9 × 32 9 × 21 = 99

Saving of C = 12 × 32 - 15 × 21 = 69

Ratio of saving of A: B : C = 56 : 99: 69

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