After saving 4/5 of his salary every month, Zacky has $150 left. Micah saves 6/7 of his salary every month. If both guys save an equal amount each month, how much is their combine salary?

Answer 1

Let x = Zacky's salary.

1/5x = 150

x = 750

4/5 of 750 = 600

Let y = Micah's salary

6/7y = 600

Solve for y, and then add x + y.