Question

Ramkumar spends 70% of his income. His income is increased by 15% and he increased his expenditure by 10%. Find the percentage increase in his savings.​

Answer 1

Answer:

26.6%

Step-by-step explanation:

Considering his income 100.

Expenditure = 70 ,Savings =30

New Income= 115 (15%of 100+100)

Expenditure Increased by 10% means , 10% of 70 +70 = 77

New Savings = 115–77 = 38

New Increase in Savings = 38-30=8

Increase in %= (8/30) *100 = 26.6%

Answer 2

The savings of Ramkumar increased by 26.67%

Step-by-step explanation:

Given:

Ramkumar spends 70% of his income, his income is increased by 15% and so is his expenditure by 10%

To find:

percentage increase in his savings

Solution:

Let Ramkumar's initial income be 100y

∴ Ramkumar's initial expenditure = 70% of 100y

∴ Ramkumar's initial expenditure = 70y

Now, Ramkumar's initial savings = Ramkumar's initial income-                              

                                                           Ramkumar's initial expenditure

Ramkumar's initial savings = 100y-70y

Ramkumar's initial savings = 30y

Later, his income increased by 15%

∴ Ramkumar's new income = 100 + 15% of 100y

∴ Ramkumar's new income = 100+15y

∴ Ramkumar's new income = 115y

Ramkumar's new expenditure is increased by 10%

∴ Ramkumar's new expenditure = 10% of 70y + 70y

∴ Ramkumar's new expenditure = 77y

Thus, Ramkumar's new savings = 115y - 77y

Ramkumar's new savings = 38y

Percentage increase in savings = new savings - old savings X 100

                                                                      old savings

Percentage increase in savings = 38y-30y X  100

                                                           30y

Percentage increase in savings = 8 X  100

                                                        30

Percentage increase in savings = 26.67%

Thus, the increase in his savings was 26.67%

#SPJ2