The total cost of the refrigerator, the water heater and the slow cooker is $600. The slow cooker costs four times as much as the water heater. The refrigerator costs twice as much as the total price of the slow cooker and water heater. How much more does the slow cooker cost than the refrigerator?
| Slow Cooker |
Water Heater |
Refrigerator |
| 4 u |
1 u |
|
| 5 u |
10 u |
| 4 u |
1 u |
10 u |
Cost of the water heater = 1 u
Cost of the slow cooker = 4 u
Total cost of the water heater and the slow cooker
= 1 u + 4 u
= 5 u
Cost of the refrigerator
= 2 x 5 u
= 10 u
Total cost of the slow cooker, the water heater and refrigerator
= 10 u + 1 u + 4 u
= 15 u
15 u = 600
1 u = 600 ÷ 15 = 40
Amount that the refrigerator cost more than the slow cooker
= 10 u - 4 u
= 6 u
= 6 x 40
= $240
Answer(s): $240
