Question

The ratio of incomes of A and B is 9 : 7 and the ratio of their expenditures is 4 : 3. If each of them saves Rs. 4000 per month, then find their monthly incomes. Also, if each of them donates 9% of his income to a charity working for old age destitutes, then find the resulting savings of each.

Answer 1

Answer:

ans. is 20.

Step-by-step explanation:

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Answer 2

Answer:

Let Income of A and B be ₹ x and ₹ y respectively.

Then, x:y = 9:7--------(1)

As each of them saves Rs 4000, so the expenditure of them are (x-4000) and (y-4000) and (x-4000) : (y-4000) = 4:3-------(2)

Solving (1) and (2)

x= ₹ 36000 and y = ₹ 28000

Hence, monthly income of A is ₹36000 and that of B is ₹28000

For 2nd part

To charity

(By A ) 9% of ₹36000 = ₹3240

(By B) 9% of ₹28000 = ₹2520

New resulting savings of A and B are ₹(4000-3240)=₹760 and ₹(4000-2520)=₹1480 respectively