Ethan, Luke, Reggie and Oliver bought a refrigerator for their aunt. Ethan paid
13 of what the rest paid. Luke paid
14 of what the rest paid. Reggie paid
16 of what the rest paid. Oliver paid $154 more than Ethan. How much did the refrigerator cost?
Ethan |
Luke |
Reggie |
Oliver |
Total |
1x35 |
|
|
|
4x35 |
|
1x28 |
|
|
5x28 |
|
|
1x20 |
|
7x20 |
35 u |
28 u |
20 u |
57 u |
140 u |
The cost of the refrigerator is repeated. Make the cost of the refrigerator the same. LCM of 4, 5 and 7 is 140.
Amount that Oliver had
= 140 u - (35 u + 28 u + 20 u)
= 57 u
Amount that Oliver paid more than Ethan
= 57 u - 35 u
= 22 u
22 u = 154
1 u = 154 ÷ 22 = 7
Cost of the refrigerator
= 140 u
= 140 x 7
= $980
Answer(s): $980