Question

A washer and a dryer cost $849 combined. The washer costs $99 more than the dryer. What is the cost of the dryer?

Answer 1

the cost of the dryer is `y=375`

Explanation:

let the cost of the washer be `x` and
the cost of the dryer be `y`
it is given that the dryer and washer together cost `$849` `rArrx+y=849->(1)`
it is also given that the washer costs `$99` more than the dryer
`rArrx=y+99->(2)`
put `(2)` in `(1)`
`rArry+y+99=849rArr2y+99=849rArr2y=750`
`rArr y=375`
put `y=375` in `(2)`
`rArrx=474`
`:.` cost of dryer is `$375`