In a class of 50 students, the girls are 76%. The average weight of boys is 62…

2020

In a class of 50 students, the girls are 76%. The average weight of boys is 62 kg and that of girls is 58 kg. What is the average weight (in kg) of whole class?

Answer: C. 58.96 — Girls = 76% of 50 = 38 and boys = 12. Total weight = 38 x 58 + 12 x 62 = 2204 + 744 = 2948 kg. Average weight of the whole class = 2948/50 = 58.96 kg.

  1. A.

    61.56

  2. B.

    60.24

  3. C.

    58.96

  4. D.

    61.45

Attempted by 37 students.

Show answer & explanation

Correct answer: C

Girls = 76% of 50 = 38 and boys = 12.

Total weight = 38 x 58 + 12 x 62 = 2204 + 744 = 2948 kg.

Average weight of the whole class = 2948/50 = 58.96 kg.

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