Multiple choice softskills business skills

What is the average weight of the class-if the average weight of boys in the class is 50 and average weight of girls in the class is 40. The ratio of number of boys to girls in 2:3

  1. 55

  2. 44

  3. 33

  4. 49

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using weighted average: (2*50 + 3*40) / (2+3) = (100 + 120) / 5 = 220/5 = 44. With 2 boys and 3 girls, the boys contribute 100 and girls contribute 120 to total weight, divided by 5 students gives 44.