Lee, Zane, Oliver and David bought a refrigerator for their aunt. Lee paid
13 of what the rest paid. Zane paid
14 of what the rest paid. Oliver paid
16 of what the rest paid. David paid $198 more than Lee. How much did the refrigerator cost?
Lee |
Zane |
Oliver |
David |
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 David had
= 140 u - (35 u + 28 u + 20 u)
= 57 u
Amount that David paid more than Lee
= 57 u - 35 u
= 22 u
22 u = 198
1 u = 198 ÷ 22 = 9
Cost of the refrigerator
= 140 u
= 140 x 9
= $1260
Answer(s): $1260