Question

Peter saves 25% of his salary. when his salary increased his monthly expenditures increases by 20% while his saving remained the same as before. what is the percentage increase in his income ?​

Answer 1

Answer:

Saving=25x then expend=75x

Increase of 20% on expenditure i.e =20% of 75x=15x

So change in income = 15%

Step-by-step explanation:

Answer 2

15 %

Step-by-step explanation:

Let the salary was 100 . Saving was 25 rupees and Expenditure was 75 rupees .

Next , it's expenditure was 75 × 120 /100 = 90 . When expenditure was 90 and savings was 25 then , salary was 90+25=115 .

And , percentage increase in Salary was 115 -100 = 15 % .