Multiple choice

The average weight of 8 sailors in a boat is increased by 1 kg if one of them weighing 56 kg is replaced by a new sailor. The weight of the new sailor is -

  1. 57 kg

  2. 64 kg

  3. 60 kg

  4. 62 kg

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

Average increases by 1 kg for 8 sailors means total weight increased by 8×1 = 8 kg. If one sailor weighing 56 kg is replaced, the new sailor weighs 56+8 = 64 kg.