Step-by-step explanation:
Recall that 1 dozen = 12 so 4 dozen cookies has a total of 48 cookies. We are going to use the following ratios to solve the problem:
and
a)
b) 18 dozen cookies = 216 cookies
(9, 15) since when you multiply them by 3 both values are equivalent.
x = 125
Multiply both sides by 5:
x/5 X 5 = x
25 X 5 = 125
so you're left with:
Hope this helps