Question

out of 50 students ,30 were boys, then percentage of girls

Answer 1

Total number of students =50

Number of boys =28

∴ Number of girls =50−28=22

∴ Percentage of girls =

50

22

×100=44%

Answer 2

Answer:

1 way (by simply thinking)-

let if there were 100 students, then there would be 60 boys and 40 girls..so 60% are boys and 40% are girls.

2 way (simple calculations)-

percentage = change/original X 100

= (50-30)/50 X 100

=20/50 X 100

= 20 X 2 = 40%

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