The total cost of the computer, the juicer and the speaker is $600. The speaker costs twice as much as the juicer. The computer costs thrice as much as the total price of the speaker and juicer. How much more does the speaker cost than the computer?
| Speaker |
Juicer |
Computer |
| 2 u |
1 u |
|
| 3 u |
9 u |
| 2 u |
1 u |
9 u |
Cost of the juicer = 1 u
Cost of the speaker = 2 u
Total cost of the juicer and the speaker
= 1 u + 2 u
= 3 u
Cost of the computer
= 3 x 3 u
= 9 u
Total cost of the speaker, the juicer and computer
= 9 u + 1 u + 2 u
= 12 u
12 u = 600
1 u = 600 ÷ 12 = 50
Amount that the computer cost more than the speaker
= 9 u - 2 u
= 7 u
= 7 x 50
= $350
Answer(s): $350
