The total cost of the dishwasher, the water heater and the blender is $1200. The blender costs thrice as much as the water heater. The dishwasher costs twice as much as the total price of the blender and water heater. How much less does the blender cost than the dishwasher?
| Blender |
Water Heater |
Dishwasher |
| 3 u |
1 u |
|
| 4 u |
8 u |
| 3 u |
1 u |
8 u |
Cost of the water heater = 1 u
Cost of the blender = 3 u
Total cost of the water heater and the blender
= 1 u + 3 u
= 4 u
Cost of the dishwasher
= 2 x 4 u
= 8 u
Total cost of the blender, the water heater and dishwasher
= 8 u + 1 u + 3 u
= 12 u
12 u = 1200
1 u = 1200 ÷ 12 = 100
Amount that the blender cost less than the dishwasher
= 8 u - 3 u
= 5 u
= 5 x 100
= $500
Answer(s): $500
