36,00÷ 12= 3,000 so that would be the average monthly loss.
Let w = washer and d = dryer:
w + d = $770,
but w = d + 70, replace w with d+70
(d+70) + d = 770
2d + 70 =770
2d = 770 -70 = 700
and d=$350, then w=350+70 = 420
-10 or X=1.25
hope this helps
hllo dear
Have a wonderful day ahead
