The washer and dryer cost $1000 combined. The cost of the washer is three times the cost of the dryer. What is the cost of the dryer?

Let the cost of the dryer be x.

Since the washer is 3 * the cost of dryer = 3*x = 3x

The total cost = $1000

x + 3x = 1000

4x = 1000

x = 1000/4

x = 250

Since the cost of the dryer be x, x = 250

Cost of dryer = $250.

Hope this explains it.

[tex] W + D = 1000 / /

W = 3*D [tex]

Plug the second equation into the first;

[tex] W+D=1000 / /

(3*D) + D=1000//

4D=1000 [tex]

D = $250