The total cost of the portable air-conditioner, the kettle and the juicer is $400. The juicer costs four times as much as the kettle. The portable air-conditioner costs thrice as much as the total price of the juicer and kettle. How much less does the juicer cost than the portable air-conditioner?
| Juicer |
Kettle |
Portable Air-conditioner |
| 4 u |
1 u |
|
| 5 u |
15 u |
| 4 u |
1 u |
15 u |
Cost of the kettle = 1 u
Cost of the juicer = 4 u
Total cost of the kettle and the juicer
= 1 u + 4 u
= 5 u
Cost of the portable air-conditioner
= 3 x 5 u
= 15 u
Total cost of the juicer, the kettle and portable air-conditioner
= 15 u + 1 u + 4 u
= 20 u
20 u = 400
1 u = 400 ÷ 20 = 20
Amount that the juicer cost less than the portable air-conditioner
= 15 u - 4 u
= 11 u
= 11 x 20
= $220
Answer(s): $220
