Question

The ratio of incomes of P and Q is 7:5 and the ratio of their expendituresis 4:3. If at the end of the year, P
241
211
and Q save Rs 3000 and Rs 2000 respectively, what is Q's
income?​

Answer 1

Answer:

5000

Step-by-step explanation:

ratios of income = 7x : 5x

ratios of exp = 4y : 3y

saving of p = 3000

saving of q = 2000

so we know that,

saving = income - exp

so ,

p's equation will be 7x - 4y = 3000

q's equation will be 5x - 3y = 2000

on solving we get x = 1000 and y = 1000

wkt q's income ratio is 5x

so 5 X 1000 = 5000

that's q's income.

Hope this helps.

If any other methods are present, please do share.

Answer 2

Answer:

5000

Step-by-step explanation:

Let x be income and y be expenditure

Income-Expenditure =savings

For P 7 x - 4 y=3000 (multiply by 3)

For Q 5x – 3 y=2000(multiply by 4)

 21 x - 12 y=9000

-20 x + 12y=-8000

=          x       =1000

From ratio income of Q=5*x=5*1000=5000