In a class of 60 students, there are 35 boys. The average weight of boys is 42…
2023
In a class of 60 students, there are 35 boys. The average weight of boys is 42 kg and the average weight of the full class is 46.5 kg. Find the average weight of girls in the class
- A.
48.7 kg
- B.
49.7 kg
- C.
52.8 kg
- D.
56.7 kg
Attempted by 15 students.
Show answer & explanation
Correct answer: C
Total class weight is 60 x 46.5 = 2790 kg. Boys' total weight is 35 x 42 = 1470 kg, so girls' total weight is 1320 kg. For 25 girls, average = 1320/25 = 52.8 kg.