Answer:
The number of boys are 64.
Step-by-step explanation:
We have,
The ratio of the boy to girl is 8:9.
Total number of girls are 72.
Let total boys are 8x and total girls are 9x.
According to the question,
[tex]9x=72\\\\x=8[/tex]
Since, number of boys are 8x. So,
[tex]B=8x=8\times 8=64[/tex]
So, the number of boys are 64.
