a) Rs. 260
b) Rs. 290
c) Rs. 292.50
d) Rs. 400.50
Answer: c
Explanation: Let the average expenditure be Rs. x
9x = 8 × 30 + (x + 20)
9x = x + 260
8x = 260
x = 32.50
Total money spent = Rs. 9x = Rs. (9 × 32.50)
= Rs. 292.50
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