Question

The average expenditure of a man for the first 4 and the last 2 days is Rs.45 and
Rs.36 respectively. If the average expenditure for the first 7 days be Rs. 40 find his
expenditure for the seventh
day?​

Answer 1

Answer:

rs 28

Step-by-step explanation:

average expenditure for the first 4 days = rs 45

total expenditure for the first 4 days = 45×4 = rs 180

average expenditure for the last 2 days = rs 36

total expenditure for the last 2 days = 36×2 = rs 72

total expenditure for the first 4 and last 2 days = 180+72 = rs 252

average expenditure for the first 7 days = rs 40

total expenditure for the first 7 days = 40×7 = rs 280

expenditure for the seventh day = 280 - 252 = rs 28