Question

a class of size 18 had an average on mathematics test of 79 points. the girls in the class
scored 1 057 points. how many total points did the 9 boys score

Answer 1

Step-by-step explanation:

Class size is 18

So girls = 9 & boys = 9

Now average of 18 students in maths is 79

So,

Total score in maths by all 18 of them = 79 × 18 = 1422

Given all 9 girls scored 1057

So all 9 will boys score = 1422 - 1057 = 365