In a school, 720 are boys and 40% are girls full stop find the number of girls
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720+ 40 percent of girls=x
40x/100=x-720
40x=100x-72000
-60x=-72000
x=72000/60
=1200
therefore no.of girls=1200-720
40x/100=x-720
40x=100x-72000
-60x=-72000
x=72000/60
=1200
therefore no.of girls=1200-720
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