Last summer at Camp okeefenokee the ratio of the number of a boy campers to the number of girl campers with 8:7. If there were a total of 195 campers, how many boy campers were there? how many girl campers?

Number of boys=x

number of girls=y.

We can suggest this system of equations:

x/y=8/7 ⇒x=8y/7

x+y=195

this system of equations can be solve by substitution method.

(8y/7) + y=195

least common multiple=7

8y+7y=1365

15y=1365

y=1365/15

y=91

x=8y/7

x=8*91 / 7

x=728/7

x=104

Answer: there were 104 boy campers and 91 girl campers.