Question
In a school of 50 students, the number of boys and girls
is in the ratio of 4:1. The boys have an average score of 38, while the girls have an average score of 45. What is the overall average score of the entire class?Solution
ATQ, Let the number of boys be 4x and girls be x, where 4x + x = 50 ⇒ x = 10. Then, boys = 40 and girls = 10. Total marks for boys = 40 × 38 = 1520. Total marks for girls = 10 × 45 = 450. Average marks for the class: Average = (1520 + 450)/50 = 39.4
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