The average weight of 5 boys is 60 kg.
If one boy weighing 75 kg leaves, what is the new average weight?
Show answer & explanation
Correct answer: A
Explanation
Average weight of 5 boys = 60 kg
One boy (75 kg) left
Total weight = 60 × 5 = 300
New total weight = 300 − 75 = 225
New number of boys = 4
New average = 225 / 4 = 56.25 kg