Question

Expenditure and saving are in ratio 5:3.if income increases by 12% and expenditure increases by 15 %.how much % do saving increases??

Answer 1

let expediture be 50 rs and saving 30rs then income 80 rs now income raises by 12% to 96 and expediture raises to 57.5 then new savings is 38.5 then percwntage change is
$\frac{38.5 - 30}{30} \times 100$
ans 28.33%