WBCS.LIVE practice question

The average height of the 10 students in a class is 105cm. If 20 more students with an average height of 120cm join the class, what will be the new average height?

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

Answer options

  1. 105 cm
  2. 110 cm
  3. 112 cm
  4. 115 cm

Correct answer and explanation

Correct answer: 115 cm