Four boys, Jack, Asher, Ethan and David saved some money. Asher's savings was
37 of the total savings of Jack, Ethan and David. Jack's savings was 40% of the total savings. Ethan's savings was
12 of the total savings of Asher and David. If Asher's savings was $105, how much less was Jack's savings than the total of the other three boys?
| Asher |
David |
Ethan |
Jack |
Total |
| 3x1 |
7x1 |
10x1 |
| 3x2 |
2x2 |
5x2 |
| 2x2 |
1x2 |
|
|
| 3 u |
1 u |
2 u |
4 u |
10 u |
40% →
40100=
25 Jack's savings : Total savings = 2 : 5
Asher's savings = 3 u
3 u = 105
1 u = 105 ÷ 3 = 35
Jack's savings = 4 u
Savings of the other three boys
= 3 u + 1 u + 2 u
= 6 u
Savings that Jack had less than the total of the three other boys
= 6 u - 4 u
= 2 u
= 2 x 35
= $70
Answer(s): $70
