Question

In a group of 135 people, 50% of them are Rs. 40 contribution, 30% Rs. 50 contribution, the remaining persons Rs. 80 per co-op group. Find the average contribution.​

Answer 1

Answer:

total people=135

since 50% of them are Rs. 40 contribution means

so amount contributed by these 50%=(135/2)×40=Rs.2700

since 30% of them are Rs. 50 contribution means

so amount contributed by these=. (30/100)×(135)×50=Rs.2025

and remaining 20% are with Rs.80 contribution

so amount contributed by these=

(20/100)×135×80 =Rs.2160

so total amount contributed=2700+2025+2160=Rs.6885

average contribution=Rs.6885/135=Rs51