Question

The annuals income of a and b are in the ratio of3:4 and thier annual expenditure are in the ratio 5:7 if each saves 5000 .find there annual income

Answer 1

Step-by-step explanation:

let income of A = 3x

and income of B = 4x

let expenditure of A = 5y

and expenditure of B = 7y

3x - 5y = 5000

4x - 7y = 5000

x = (5000 + 5y)/3

4(5000 + 5y)/3 = 5000 + 7y

20000 + 20y = 15000 + 21y

20000 - 15000 = 21y - 20y

y = 5000

x = (5000 + 5y)/3

x = (5000 + 25000)/3

x = 30000/3

x = 10000

income of A = 3x = 30000Rs

income of B = 4x = 40000Rs

expenditure of A = 25000Rs

expenditure of B = 35000Rs

Hope it helps. Thankyou.

Answer 2

Step-by-step explanation:

according to the question

income ratio = A:B

= 3:4

expences ratio = 5:7

so, income se expences ko subtraction karne par

3:4 ×2= 6:8

5:7 ×1 = 5:7

dono ka different same 1

so, 1 = 5000

A's annual income=6×5000

=30000rs

B's annual income=8×5000

=40000rs

Answer: