Question
Download Solution PDFThere are 89 members in group A, 59 members in group B and 75 members in group C. All the members of these groups went to a restaurant. The average amount spent on each member of group A, B and C
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Group A: 89 members, Average amount = ₹385
Group B: 59 members, Average amount = ₹277
Group C: 75 members, Average amount = ₹131
Formula used:
Total average = (Total amount spent by all groups) / (Total members)
Calculation:
Total amount by A = 89 × 385 = ₹34265
Total amount by B = 59 × 277 = ₹16343
Total amount by C = 75 × 131 = ₹9825
Total amount spent = 34265 + 16343 + 9825 = ₹60433
Total members = 89 + 59 + 75 = 223
Total average amount = 60433 / 223 ≈ ₹271
∴ Total average amount spent per member = ₹271
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