Question

Ram Spent 20% on room rent, 10% of the remaining salary on groceries and gives Rs. 3600 to his brother. Find the total amount.
1. Rs. 5,000
2. Rs. 4,000
3. Rs. 2,500
4. Rs. 3,000
5. None of these

Answer 1

Correct Answer - Option 1 : Rs. 5,000

Given:

20% spent to room rent, 10% Remaining salary and Rs. 3600 gives to brother

Calculation:

Let Ram monthly income be = 100

According to question,

Room rent expenditure = (100 -20)

⇒ 80

Remaining amount groceries   expenditure = 80 of 10%

⇒ 8

Remaing amount gives his brother = {100 - (20 - 8)

⇒ 72

Giving to, 

⇒ 3600 = 72

⇒ 50

⇒ Total monthly income is 50 × 100 

⇒ 5,000

∴ Total monthly income is Rs. 5,000