Question

there are two sections A and B in a class, having 40 and 35 pupils respectively . 90% of A and 60% of B passed. Find the percentage of passes in the two together

Answer 1

Total Pupils = 40+35 = 75

(40*0.9 + 35*0.6)/75*100 = 76% of the class passed

Answer 2

In more detail...

40*0.9 = 36 people in A passed

35*0.6 = 21 people in B passed

Total Students = 40+35 = 75
Total Students Passed = 36+21 = 57

57/75 (*100) = 76% of the class (A and B) passed.

Answer 3

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