Four boys, Harry, Ethan, Oliver and Xavier saved some money. Ethan's savings was
12 of the total savings of Harry, Oliver and Xavier. Harry's savings was 10% of the total savings. Oliver's savings was
27 of the total savings of Ethan and Xavier. If Ethan's savings was $370, how much less was Oliver's savings than the total of the other three boys?
| Ethan |
Xavier |
Oliver |
Harry |
Total |
| 1x10 |
2x10 |
3x10 |
| 9x3 |
1x3 |
10x3 |
| 7x3 |
2x3 |
|
|
| 10 u |
11 u |
6 u |
3 u |
30 u |
10% →
10100=
110 Harry's savings : Total savings = 1 : 10
Ethan's savings = 10 u
10 u = 370
1 u = 370 ÷ 10 = 37
Oliver's savings = 6 u
Savings of the other three boys
= 10 u + 11 u + 3 u
= 24 u
Savings that Oliver had less than the total of the three other boys
= 24 u - 6 u
= 18 u
= 18 x 37
= $666
Answer(s): $666
