The total cost of the dishwasher, the sandwich maker and the stand mixer is $240. The stand mixer costs thrice as much as the sandwich maker. The dishwasher costs twice as much as the total price of the stand mixer and sandwich maker. How much more does the stand mixer cost than the dishwasher?
| Stand Mixer |
Sandwich Maker |
Dishwasher |
| 3 u |
1 u |
|
| 4 u |
8 u |
| 3 u |
1 u |
8 u |
Cost of the sandwich maker = 1 u
Cost of the stand mixer = 3 u
Total cost of the sandwich maker and the stand mixer
= 1 u + 3 u
= 4 u
Cost of the dishwasher
= 2 x 4 u
= 8 u
Total cost of the stand mixer, the sandwich maker and dishwasher
= 8 u + 1 u + 3 u
= 12 u
12 u = 240
1 u = 240 ÷ 12 = 20
Amount that the dishwasher cost more than the stand mixer
= 8 u - 3 u
= 5 u
= 5 x 20
= $100
Answer(s): $100
