Answer:
375
Step-by-step explanation:
You can set up an equation here.
Let the washer's cost be x and the cost of the dryer to be y.
You can set up the following equations:
[tex]x+y=687\\x=y-63[/tex]
After getting those two equations you can substitute the second into the first equation to get this:
[tex]y-63+y=687[/tex]
Simplifying that gives:
[tex]2y-63=687\\2y=750\\y=375[/tex]
