Question

in a school 4/5 of the children are boys .If the number of girls is 200 find the number of boys

Answer 1

Given that 4/5 children in a school are boys. Therefore, the number of girls is 1/5.
Let total number of students be x

1/5x = 200
     x = 200 x 5
     x = 1000 students

Number of boys is 4/5x

= 4/5 x 1000
= 800 boys

Answer 2

Let total number od students =x
according to the question. .
Number of boys are 4/5 x
so the number of girls are ..1-4/5.
=1/5x are the number of girls
200=1/5x
1000=x
Total number of students are 1000
girls are 200
boys are ..1000-200=800..
or 4/5×100 =800.