WBCS.LIVE practice question

The average weight of 107 notebooks kept in a box is 10.7 kg. By adding 1 more notebook in the box, its average weight becomes 10.8 kg. Find the weight of the new notebook?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 21.5 kg
  2. 21.9 kg
  3. 21.3 kg
  4. 21.7 kg

Correct answer and explanation

Correct answer: 21.5 kg