Four boys, Bryan, Justin, Ethan and Brandon saved some money. Justin's savings was
23 of the total savings of Bryan, Ethan and Brandon. Bryan's savings was 30% of the total savings. Ethan's savings was
16 of the total savings of Justin and Brandon. If Justin's savings was $128, how much less was Ethan's savings than the total of the other three boys?
| Justin |
Brandon |
Ethan |
Bryan |
Total |
| 2x2 |
3x2 |
5x2 |
| 7x1 |
3x1 |
10x1 |
| 6x1 |
1x1 |
|
|
| 4 u |
2 u |
1 u |
3 u |
10 u |
30% →
30100=
310 Bryan's savings : Total savings = 3 : 10
Justin's savings = 4 u
4 u = 128
1 u = 128 ÷ 4 = 32
Ethan's savings = 1 u
Savings of the other three boys
= 4 u + 2 u + 3 u
= 9 u
Savings that Ethan had less than the total of the three other boys
= 9 u - 1 u
= 8 u
= 8 x 32
= $256
Answer(s): $256
