Question

The average expenditure of a Shankar for the first five months is Rs. 1400 and for the next seven months is Rs. 1500. Find his monthly average income if he saves Rs. 3200 during the year.

1. Rs 1725
2. Rs 1250
3. Rs 1315
4. Rs 1435
5. None of these

Answer 1

Correct Answer - Option 1 : Rs 1725

Given 

Average expenditure for the first five months = Rs. 1400

Average expenditure for the next seven months = Rs. 1500

Formula Used 

Income  =  Expenditure + Savings

Calculation

We know that, Income = Expenditure + Savings

Total Expenditure = 1400 × 5 + 1500 × 7 = 7000 + 10500 = Rs. 17500

Total Savings = Rs 3200

Total Income = 17500 + 3200 = Rs. 20700

 Average income = 20700/12 = 1725

∴The monthly average income of Shankar is Rs. 1725.