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3 years ago

There are 27 pupils. There are twice as many boys than girls. how many boys and girls are there

Mathematics

2 answers:

Ann [662]3 years ago

5 0

No. of boys=2x
no.of girls=x
total no. of pupils=2x+x
27=3x
27/3=x
x=no.of girls=9
no.of boys =2x=2*9=18

Anna71 [15]3 years ago

3 0

Let x = the numbers of girls
thus
the numbers of boys = 2x
x + 2x = 27
3x = 27
x = 9
2x = 2 . 9 =18
girls = 9 & boys = 18

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