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In a coeducational school there were 2800 students. If in a year the number of boys were to increase by 5% and that of girls by 10% the school would have 3000 students. Find the original number of boys and girls studying in the school.

Posted by Stuti Singla 4 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 3 months ago

(5x/100)+(10y/100)=200
=> 5x+10y=20000
=> x+2y=4000 -(1)
x+y=2800 -(2)
=> 0+y=1200 (on substraction)
x=2800-1200=1600
Therefore, no. of boys= 1600
and no. of girls = 1200.

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