Question

Last month, Jim and Debbie earned $7,200. Debbie earned $1,600 more than Jim earned. How much did they each earn? Call the amount that Jim earned j and the amount that Debbie earned d.

Answer 1

J + d + 1600 = 7200

j + d
= 7200-1600
= 5600

j = 5600/2
= $2800

d = 2800 + 1600
= $4400

Answer 2

Step-by-step explanation:

Let Jim earned $ x

Therefore, Debbie earned = $(x + 1600)

According to the given information:

$x + (x + 1600) = 7200 \\ \therefore \: 2x = 7200 - 1600 \\ \therefore \: 2x =5600 \\ \\ \therefore \: x = \frac{5600}{2} \\ \\ \therefore \: x =2800$

Thus, Jim`s earning = $2800

Debbie`s earning = 2800 + 1600 = $4400