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?
- A.
61.56
- B.
60.24
- C.
58.96
- D.
61.45
Attempted by 33 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.