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?

[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

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.