The total cost of the refrigerator, the food processor and the muffin maker is $720. The muffin maker costs thrice as much as the food processor. The refrigerator costs twice as much as the total price of the muffin maker and food processor. How much more does the muffin maker cost than the refrigerator?
| Muffin Maker |
Food Processor |
Refrigerator |
| 3 u |
1 u |
|
| 4 u |
8 u |
| 3 u |
1 u |
8 u |
Cost of the food processor = 1 u
Cost of the muffin maker = 3 u
Total cost of the food processor and the muffin maker
= 1 u + 3 u
= 4 u
Cost of the refrigerator
= 2 x 4 u
= 8 u
Total cost of the muffin maker, the food processor and refrigerator
= 8 u + 1 u + 3 u
= 12 u
12 u = 720
1 u = 720 ÷ 12 = 60
Amount that the refrigerator cost more than the muffin maker
= 8 u - 3 u
= 5 u
= 5 x 60
= $300
Answer(s): $300
