Julian, Pierre, Henry and Warren bought a refrigerator for their aunt. Julian paid
13 of what the rest paid. Pierre paid
14 of what the rest paid. Henry paid
16 of what the rest paid. Warren paid $66 more than Julian. How much did the refrigerator cost?
Julian |
Pierre |
Henry |
Warren |
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 Warren had
= 140 u - (35 u + 28 u + 20 u)
= 57 u
Amount that Warren paid more than Julian
= 57 u - 35 u
= 22 u
22 u = 66
1 u = 66 ÷ 22 = 3
Cost of the refrigerator
= 140 u
= 140 x 3
= $420
Answer(s): $420