The ratio of the number of boys and girls in a class को of 400 students is 1 : 24. How many girl students हो need to be removed from the class, so that percentage of boys in the class becomes 40%?
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Answer:
1x +24x = 400
x = 16
So boys are 16
and girls are 384
We need boys 40%
So 40% of total students = 16 boys
total students = 16 × 100/40
= 40
No. of girls should 24 (40 - 16 )
So for having 24 girls we have to to exclude
360 girls (384 - 24)
Correct me if I'm wrong
Thanks
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