The average daily expenditure of a person for the first five days is Rs. 120 and for the next four days in Rs.80. If he has saved Rs.25 during the period of 9 days, his daily average income is:

Correct option is D

Given:
Average daily expenditure for the first 5 days = Rs. 120
Average daily expenditure for the next 4 days = Rs. 80
Total savings over 9 days = Rs. 25

Formula used:

Total expenditure = Average expenditure × Number of days
Total savings = Total income - Total expenditure

Income = Expenditure + Savings.

Solution:

Total expenditure for first 5 days = 120 × 5 = 600

Total expenditure for next 4 days = 80 × 4 = 320
Total expenditure for 9 days = 600 + 320 = 920

Total income = Total expenditure + Total savings = 920 + 25 = 945​

Average daily income = $$\frac{945}{9} = 105$$

So, the daily average income is Rs. 105.

Thus, the correct answer is (d).