The total cost of the refrigerator, the deep fryer and the kettle is $600. The kettle costs twice as much as the deep fryer. The refrigerator costs thrice as much as the total price of the kettle and deep fryer. How much less does the kettle cost than the refrigerator?
| Kettle |
Deep Fryer |
Refrigerator |
| 2 u |
1 u |
|
| 3 u |
9 u |
| 2 u |
1 u |
9 u |
Cost of the deep fryer = 1 u
Cost of the kettle = 2 u
Total cost of the deep fryer and the kettle
= 1 u + 2 u
= 3 u
Cost of the refrigerator
= 3 x 3 u
= 9 u
Total cost of the kettle, the deep fryer and refrigerator
= 9 u + 1 u + 2 u
= 12 u
12 u = 600
1 u = 600 ÷ 12 = 50
Amount that the kettle cost less than the refrigerator
= 9 u - 2 u
= 7 u
= 7 x 50
= $350
Answer(s): $350
