Four boys, David, Eric, Lee and Peter saved some money. Eric's savings was
17 of the total savings of David, Lee and Peter. David's savings was 20% of the total savings. Lee's savings was
13 of the total savings of Eric and Peter. If Eric's savings was $180, how much less was David's savings than the total of the other three boys?
| Eric |
Peter |
Lee |
David |
Total |
| 1x5 |
7x5 |
8x5 |
| 4x8 |
1x8 |
5x8 |
| 3x8 |
1x8 |
|
|
| 5 u |
19 u |
8 u |
8 u |
40 u |
20% →
20100=
15 David's savings : Total savings = 1 : 5
Eric's savings = 5 u
5 u = 180
1 u = 180 ÷ 5 = 36
David's savings = 8 u
Savings of the other three boys
= 5 u + 19 u + 8 u
= 32 u
Savings that David had less than the total of the three other boys
= 32 u - 8 u
= 24 u
= 24 x 36
= $864
Answer(s): $864
