Four boys, Jack, Xavier, Bobby and Ben saved some money. Xavier's savings was
13 of the total savings of Jack, Bobby and Ben. Jack's savings was 30% of the total savings. Bobby's savings was
34 of the total savings of Xavier and Ben. If Xavier's savings was $200, how much less was Jack's savings than the total of the other three boys?
Xavier |
Ben |
Bobby |
Jack |
Total |
1x5 |
3x5 |
4x5 |
7x2 |
3x2 |
10x2 |
4x2 |
3x2 |
|
|
5 u |
3 u |
6 u |
6 u |
20 u |
30% →
30100=
310 Jack's savings : Total savings = 3 : 10
Xavier's savings = 5 u
5 u = 200
1 u = 200 ÷ 5 = 40
Jack's savings = 6 u
Savings of the other three boys
= 5 u + 3 u + 6 u
= 14 u
Savings that Jack had less than the total of the three other boys
= 14 u - 6 u
= 8 u
= 8 x 40
= $320
Answer(s): $320