Thread: 357 kids at a summer camp.the ratio of first time campers to old campers was

7:10.how many campers are there? There are 357 kids at a summer camp.The ratio of first time campers to ols campers was 7:10.How many first time campers are in the summer camp.

7/(10 + 7) = 7/17 are first time campers, 10/(10 + 7) = 10/17 are not.

First timers: 7/17 * 357 = 7 * 21 = 147