There are 98 women in a group and their average weight is 52 kg. If 7 women of average weight 60 kg leave the group and two new women of average weight 80 kg join the group, then what will be the new average weight of women in the group now?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 52 kg.
Total weight of 98 women = 98 × 52 = 5096
Weight of 7 women = 7 × 60 = 420
Weight of 2 women = 2 × 80 = 160
New total weight = 5096 - 420 + 160
⇒ 5256 - 420 = 4836
New number of women = 98 - 7 + 2 = 93
Average weight = 4836/93 = 52 kg