Question

The ratio of boys to girls in a class is 4:5. The average score in an English test of all the students is 58. The average score of the boys in the test is 40% than that of the girls. What the average score of the girls? ​

Answer 1

Average score of girls is 34.8

Answer 2

Given:

Ratio of boys to girls is 4:5

average score in english for all students = 58

average score of boys = 40% than girls

To find:

Let average score of boys= x

average score of girls y= 40 % of x

y =0.4x

ratio of boys and girls= 4:5

as per the question,

4x + 5y =58 ×9

4x +5(0.4x) =522

6x = 522

x =87

average score of girls =0.4 × 87

=34.8

Solution:

average score of girls =34.8