Question

7. My income for 15 days averaged Rs. 7,
the average for the first 5 days was Rs.
6 and the average for the last 9 days was
Rs.8. What was the income on the
6th day?
(a) Rs. 2
(b) Rs. 2.25
(c) Rs.2.50
(d) None​

Answer 1

Answer:

3

Step-by-step explanation:

total 15day income =15*7=105

average income first five day =6

total 5 day income =5*6=30

total income last 9 day =9*8=72

6 day income=105-30-72=3