Question

Sunil spens 80% of his income . when his income increase by 40% , his expenses also increase by 50% of his earlier expenses .How much percentage of his earning he saves now ?? ​

Answer 1

Ans:- let 100₹ is his earlier income. he spent 80% of his income. so, he saves 20% of his income.
After increment in his income by 40% then his income becomes 140₹. his expenditure also increased by 50%. so his expenditure is now {80+ 50% of 80} = 120₹.
therefore saving is 20₹.
ratio of saving on his current income and expenditure is 20/140×100

$14 \frac{2}{7}$ %