The Ratio of the no. of boys to the no. of girls in a school of 560 pupils is 5:3 . If 10 new boys are admitted . find how many new girls may be admitted so that the ratio of the no. of boys to the no. of girls may change to 3:2
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let the boys be 5x and girls be 3x
then total students= 8x=560
x=560/8
=70
boys are350 and girls are 210
now 10 more boys so 360 boys
the ratio of boys is 3 which is 3x
if 360 boys are 3x then x =120
ratio of girls is 2 which is 2x
=2×120=240 girls
so 30 girls should be admitted
then total students= 8x=560
x=560/8
=70
boys are350 and girls are 210
now 10 more boys so 360 boys
the ratio of boys is 3 which is 3x
if 360 boys are 3x then x =120
ratio of girls is 2 which is 2x
=2×120=240 girls
so 30 girls should be admitted
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