There are 81 members in group A, 29 members in group B and 70 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 is ₹467, ₹117 and ₹378, respectively. The total average amount (in ₹) spent per member is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 376.
Group A: 81 members, avg = ₹467
Group B: 29 members, avg = ₹117
Group C: 70 members, avg = ₹378
Total amount spent
A: 81 × 467 = ₹37,827
B: 29 × 117 = ₹3,393
C: 70 × 378 = ₹26,460
Total spent = 37827 + 3393 + 26460 = ₹67,680
Total members = 81 + 29 + 70 = 180
Average per member = 67680 ÷ 180 = ₹376