Four boys, Ahmad, Luis, Oliver and Cole saved some money. Luis's savings was
23 of the total savings of Ahmad, Oliver and Cole. Ahmad's savings was 10% of the total savings. Oliver's savings was
27 of the total savings of Luis and Cole. If Luis's savings was $72, how much less was Oliver's savings than the total of the other three boys?
| Luis |
Cole |
Oliver |
Ahmad |
Total |
| 2x2 |
3x2 |
5x2 |
| 9x1 |
1x1 |
10x1 |
| 7x1 |
2x1 |
|
|
| 4 u |
3 u |
2 u |
1 u |
10 u |
10% →
10100=
110 Ahmad's savings : Total savings = 1 : 10
Luis's savings = 4 u
4 u = 72
1 u = 72 ÷ 4 = 18
Oliver's savings = 2 u
Savings of the other three boys
= 4 u + 3 u + 1 u
= 8 u
Savings that Oliver had less than the total of the three other boys
= 8 u - 2 u
= 6 u
= 6 x 18
= $108
Answer(s): $108
