Question

Last summer,at a camp,the ratio of the number of boy campers to girl campers is 9:6.If there is 225 campers,how many boy campers were there?How many girl campers?

Answer 1

Answer: There were 135 boy campers and 90 girl campers.

Step-by-step explanation:

Let be "b" the number of boys campers and "g" the number of girl campers.

Given the following ratio of the number of boy campers to girl campers:

$9:6$

We know that for every 9 boys campers there were 6 girl camper; if we add them we get this sum:

$9+6=15\ campers$

Knowing that there were a total of  225 campers, we can set up the following proportion in order to find the value of "b". Then, solving for "b" we get:

$\frac{9}{15}=\frac{b}{225}\\\\b=(225)(\frac{9}{15})\\\\b=135$

Finally, we get that the number of girl campers was:

$g=225-135=90$