Question

A man spend 75% of his incom . His incom is increased by 20% and he increased his expenditure by 10% his savings are increased by​

Answer 1

Answer:

50%

Step-by-step explanation:

Let us say that his original salary is x.

Then, original expenditure = 75x/100 = 0.75 x

Original Savings = 0.25 x

New salary = x(1 + 20/100) = 1.2 x

New expenditure = 0.75x(1 + 10/100) = 0.825 x

New savings = 1.2x - 0.825x = 0.375 x

Rate of increase of savings = (0.375x - 0.25x)/0.25x × 100 = 0.125x/0.25x × 100 = 0.5 × 100 = 50%

Answer 2

Answer:

50%

Step-by-step explanation:

Let his income be Rs. 100 Expenditure = Rs. 75

Now Income is increased by 20%

Thus, new income =120

Expenditure is increased by 10% =  100/75×110 = Rs. 82.50

 

Saving =120−82.50=37.50

Earlier saving =100−75=25

Increase in saving = 37.50-25/25 ×100

                               =50%