Four boys, Peter, Andy, Jack and Ken saved some money. Andy's savings was
25 of the total savings of Peter, Jack and Ken. Peter's savings was 30% of the total savings. Jack's savings was
25 of the total savings of Andy and Ken. If Andy's savings was $740, how much less was Peter's savings than the total of the other three boys?
Andy |
Ken |
Jack |
Peter |
Total |
2x10 |
5x10 |
7x10 |
7x7 |
3x7 |
10x7 |
5x7 |
2x7 |
|
|
20 u |
15 u |
14 u |
21 u |
70 u |
30% →
30100=
310 Peter's savings : Total savings = 3 : 10
Andy's savings = 20 u
20 u = 740
1 u = 740 ÷ 20 = 37
Peter's savings = 21 u
Savings of the other three boys
= 20 u + 15 u + 14 u
= 49 u
Savings that Peter had less than the total of the three other boys
= 49 u - 21 u
= 28 u
= 28 x 37
= $1036
Answer(s): $1036