Question

The ratio of income of 2 person is 9:7 expenditure are 4:3 if eachof them manage to save 2000 find mothly income

Answer 1

${\huge {\mathfrak {Answer :-}}}$

➡️ Let, income be 9x and 7x.

➡️ Let, expenditure be 4y and 3y.

➡️ 9x - 4y = 2000.

Or, 27x - 12y = 6000.

➡️ 7x - 3y = 2000.

Or, 28x - 12y = 8000.

➡️ Now,

28x - 27x - 12y + 12y = 2000.

Or, x = 2000.

➡️ 9x = 18000.

And, 7x = 14000.

That's it..