Question

The average expenditure of a man for the first five months of a year is Rs 5,000 and for the next seven months it is Rs 5,400. He saves Rs 2,300 during the year. His average monthly income is:

• A. Rs 5,425
• B. Rs 5,500
• C. Rs 5,446
• D. Rs 5,600

Answer 1

The correct option is A Rs 5,425

Average expenditure of a man for the first five months = Rs 5000
Sum of first five months expenditure = 5 $\times$ 5000 = Rs 25000
Average expenditure of a man for the second seven months = Rs 5400
Sum of next seven months expenditure = 7 $\times$ 5400 = 37800
Total expenditure = 25000 + 37800 = 62800
Yearly saving = Rs 2300
Average sum of income = 62800 + 2300 = Rs 65100
Average monthly income = $=\frac{65100}{12}=Rs5425$