The total cost of the dishwasher, the lamp and the muffin maker is $1400. The muffin maker costs four times as much as the lamp. The dishwasher costs thrice as much as the total price of the muffin maker and lamp. How much more does the muffin maker cost than the dishwasher?
| Muffin Maker |
Lamp |
Dishwasher |
| 4 u |
1 u |
|
| 5 u |
15 u |
| 4 u |
1 u |
15 u |
Cost of the lamp = 1 u
Cost of the muffin maker = 4 u
Total cost of the lamp and the muffin maker
= 1 u + 4 u
= 5 u
Cost of the dishwasher
= 3 x 5 u
= 15 u
Total cost of the muffin maker, the lamp and dishwasher
= 15 u + 1 u + 4 u
= 20 u
20 u = 1400
1 u = 1400 ÷ 20 = 70
Amount that the dishwasher cost more than the muffin maker
= 15 u - 4 u
= 11 u
= 11 x 70
= $770
Answer(s): $770
