The total cost of the refrigerator, the speaker and the stand mixer is $360. The stand mixer costs thrice as much as the speaker. The refrigerator costs twice as much as the total price of the stand mixer and speaker. How much less does the stand mixer cost than the refrigerator?
| Stand Mixer |
Speaker |
Refrigerator |
| 3 u |
1 u |
|
| 4 u |
8 u |
| 3 u |
1 u |
8 u |
Cost of the speaker = 1 u
Cost of the stand mixer = 3 u
Total cost of the speaker and the stand mixer
= 1 u + 3 u
= 4 u
Cost of the refrigerator
= 2 x 4 u
= 8 u
Total cost of the stand mixer, the speaker and refrigerator
= 8 u + 1 u + 3 u
= 12 u
12 u = 360
1 u = 360 ÷ 12 = 30
Amount that the stand mixer cost less than the refrigerator
= 8 u - 3 u
= 5 u
= 5 x 30
= $150
Answer(s): $150
