The total cost of the dishwasher, the slow cooker and the lamp is $750. The lamp costs four times as much as the slow cooker. The dishwasher costs twice as much as the total price of the lamp and slow cooker. How much less does the lamp cost than the dishwasher?
| Lamp |
Slow Cooker |
Dishwasher |
| 4 u |
1 u |
|
| 5 u |
10 u |
| 4 u |
1 u |
10 u |
Cost of the slow cooker = 1 u
Cost of the lamp = 4 u
Total cost of the slow cooker and the lamp
= 1 u + 4 u
= 5 u
Cost of the dishwasher
= 2 x 5 u
= 10 u
Total cost of the lamp, the slow cooker and dishwasher
= 10 u + 1 u + 4 u
= 15 u
15 u = 750
1 u = 750 ÷ 15 = 50
Amount that the lamp cost less than the dishwasher
= 10 u - 4 u
= 6 u
= 6 x 50
= $300
Answer(s): $300
