Answer:
30 waiters
Step-by-step explanation:
the ratio of 5 waiters to 2 cooks
you are given the total number of waiters and cooks = 42
write equation
x (5 + 2) = 42
7x = 42
x = 6
now distribute the x into waiters which is 5x or 5(6) = 30 waiters
additionally 2x is for cooks or 2(6) = 12 cooks; which adds up to 42