Question

Solve for s in the proportion.
12
S+ 8
16
S =

Answer 1

`(15)/(s + 8) = (12)/(16) / (4)/(4) \: or \: (3)/(4)`

`(15)/(s + 8) = (3)/(4) \\ 4 * 15 = 3 * (s + 8) \\ 60 = 3s + 24 \\ 60 - 24 = 3s + 24 - 24 \\ 36 = 3s`

`(36)/(3) = (3s)/(3) \\ s = 12`