Question

Jon makes $78 in 12 hours of work for his mom. how much would jon make in 20 hours of work

Answer 1

$ 78 in 12 hrs....78/12 = 6.50 per hr

for 20 hrs...
6.50 * 20 = $ 130 <==

Answer 2

$130

Explanation:

This is a direct proportionality between the amount he makes and the time worked. As the time increases, so does the amount he makes and vice versa.

Let the amount made be A and the time T

A ∝ T,

A = KT where K is the constant of proportionality

where Jon makes $78 in 12 hours of work, A = 78, T = 12

78 = 12K

K = 6.5

A = 6.5T

In 20 hours of work, T = 20

A = 6.5 × 20

A = $130