Four boys, Ryan, Peter, Jack and Fred saved some money. Peter's savings was
711 of the total savings of Ryan, Jack and Fred. Ryan's savings was 10% of the total savings. Jack's savings was
18 of the total savings of Peter and Fred. If Peter's savings was $945, how much less was Jack's savings than the total of the other three boys?
Peter |
Fred |
Jack |
Ryan |
Total |
7x5 |
11x5 |
18x5 |
9x9 |
1x9 |
10x9 |
8x9 |
1x9 |
|
|
35 u |
37 u |
9 u |
9 u |
90 u |
10% →
10100=
110 Ryan's savings : Total savings = 1 : 10
Peter's savings = 35 u
35 u = 945
1 u = 945 ÷ 35 = 27
Jack's savings = 9 u
Savings of the other three boys
= 35 u + 37 u + 9 u
= 81 u
Savings that Jack had less than the total of the three other boys
= 81 u - 9 u
= 72 u
= 72 x 27
= $1944
Answer(s): $1944