Question

40% of the students in a school are boys. In a particular school examination, attended by
all the students, only 20% of the girls passed, though 40% of all the students had passed.
Find the percentage of boys who passed the test.
1) 30
2) 50
3) 70
4) 28

Answer 1

Answer:

28

Step-by-step explanation:

let total be 100%

given 40% of boys are in school so remaining 60% girls are present

in 60% of girls oy 20% are passed so 12%

given total 40% are passed already 12% are passed from 40% ie remaining passed members are 40-12= 28%