Four boys, Peter, Ben, David and Jenson saved some money. Ben's savings was
17 of the total savings of Peter, David and Jenson. Peter's savings was 30% of the total savings. David's savings was
16 of the total savings of Ben and Jenson. If Ben's savings was $65, how much less was David's savings than the total of the other three boys?
| Ben |
Jenson |
David |
Peter |
Total |
| 1x5 |
7x5 |
8x5 |
| 7x4 |
3x4 |
10x4 |
| 6x4 |
1x4 |
|
|
| 5 u |
19 u |
4 u |
12 u |
40 u |
30% →
30100=
310 Peter's savings : Total savings = 3 : 10
Ben's savings = 5 u
5 u = 65
1 u = 65 ÷ 5 = 13
David's savings = 4 u
Savings of the other three boys
= 5 u + 19 u + 12 u
= 36 u
Savings that David had less than the total of the three other boys
= 36 u - 4 u
= 32 u
= 32 x 13
= $416
Answer(s): $416
