The ratio of the number of boys to the number of girls in a school of 560 pupils is 5:3.If 10 new boys are admitted ,fund how many new girls may be admitted so that the ratio of the number of boys to the number of girls may change to 3:2.
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Let the no. of boys be 5x
No. of girls be 3x
5x + 3x = 560
8x = 560
x = 70
Therefore, no. of boys = 350 boys
No. of girls = 210 girls
After admission, no. of boys = 360
Let the no. of boys be 3x
No. Of girls be 2x
3x = 360
x = 120 boys
Therefore, no. of girls have to be 240 (120X2)
No. Of girls to be added = 30 (240-210) girls
Answered by
1
the ans. will be 70
if it is correct then add it to brainly
if it is correct then add it to brainly
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Nikita9358:
The question says that 10 new boys are admitted... are you sure that yours is right?
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