A washer and dryer cost $600 combined. The cost of the washer is three times the cost of the dryer

First, assign two variables to the prices of the two appliances.

'w' will represent the price of a washer, and 'd' will represent the price of a dryer.

Because "the washer is three times the cost of the dryer," we can form this equation:

w = 3d

On top of that, we know the washer and dryer add up to 600, making another equation.

w + d = 600

Because we know the value of 'w,' we can input that into the equation 'w + d = 600'

(3d) + d = 600

Simplify:

4d = 600

d = 150

Since the washer is three times the price of the dryer:

w = 3 (150) = 450

The dryer costs $150, and the washer costs $450.

-T. B.