Multiple choice

The average weight of 15 men in a boat is increased by 1.6 kg when one of the crew, who weighs 42 kg, is replaced by a new man. Find the weight of the new man (in kg).

  1. 67

  2. 65

  3. 66

  4. 43

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Average increase of 1.6 kg for 15 men means total weight increased by 15 × 1.6 = 24 kg. Since old crew weighed 42 kg, new man weighs 42 + 24 = 66 kg.