Answer:
The first one cost $390, while the second one cost $409.50
Explanation:
650 x .10 =65
650-65=585
585 x .30 = 175.5
585-175.5=409.5
650 x .4 =260
260<409.5
Since the second washing machine is being marked off by 10% first then by 30% percent second, the 30% would be taking away less of the total price than if you did all 40% at one time. I hope this helps