Question

The monthly income of pnd q are in ratio 9:7 and their monthly expenditure are in ratio of 4:3 if each saves rs. 1600 per month find the monthly income of each

Answer 1

9:7-4:3=5:4= savings= 1600
if 5x:4x =1600:1600
first one's income= 5x=1600
x=1600÷5
x=320
9×x=9×320=2880
second one's income=
4x=1600
x=1600÷4
x=400
7×x=7×400=2800