Four boys, Japheth, Pierre, Oliver and Henry saved some money. Pierre's savings was
15 of the total savings of Japheth, Oliver and Henry. Japheth's savings was 30% of the total savings. Oliver's savings was
34 of the total savings of Pierre and Henry. If Pierre's savings was $50, how much less was Oliver's savings than the total of the other three boys?
| Pierre |
Henry |
Oliver |
Japheth |
Total |
| 1x5 |
5x5 |
6x5 |
| 7x3 |
3x3 |
10x3 |
| 4x3 |
3x3 |
|
|
| 5 u |
7 u |
9 u |
9 u |
30 u |
30% →
30100=
310 Japheth's savings : Total savings = 3 : 10
Pierre's savings = 5 u
5 u = 50
1 u = 50 ÷ 5 = 10
Oliver's savings = 9 u
Savings of the other three boys
= 5 u + 7 u + 9 u
= 21 u
Savings that Oliver had less than the total of the three other boys
= 21 u - 9 u
= 12 u
= 12 x 10
= $120
Answer(s): $120
