Question

In a school 4/5 of the children are boys. If the number of girls is 100. find the number of boys.
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Answer 1

Answer:

so the number of girls are ..1-4/5. or 4/5×100 =800.

Step-by-step explanation:

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Answer 2

Answer:

boys and girls=4/5

imagine boy's and girl's=x

thus,4x,5x

5x=100

x=100/5

x=20

boys=4x

so, 4×20

=80

the number of boys=80