Question

The monthly income of A and B are in the ratio of 9 : 7 and their monthly expenditure are in the
ratio of 4:3. If each saves Rs 1600 per month, find the monthly income of each​

Answer 1

Answer:

let incomes of both persons be 9x and 7x

and their expenditures be 4y and 3y

then

9x-4y=1600---eq1

7x-3y=1600----eq2

multiplying eq1 with 3 and eq2 with 4,we get

27x-12y=4800--eq3

28x-12y=6400--eq4

subtracting eq3 from eq4,we get

x=1600

since 7x-3y=1600

7(1600)-3y=1600

3y=1600x6

y=3200

then income of x and y is 9(1600),7(1600)

I.e 14400,11200

exp being 4(3200),3(3200),

I.e 12800,9600

Answer 2

HERE IS YOUR ANSWER MATE.....;

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HOPE IT'S HELPFUL.....:-)