Four boys, Archie, Pierre, Sam and Jack saved some money. Pierre's savings was
29 of the total savings of Archie, Sam and Jack. Archie's savings was 10% of the total savings. Sam's savings was
27 of the total savings of Pierre and Jack. If Pierre's savings was $720, how much less was Archie's savings than the total of the other three boys?
Pierre |
Jack |
Sam |
Archie |
Total |
2x10 |
9x10 |
11x10 |
9x11 |
1x11 |
10x11 |
7x11 |
2x11 |
|
|
20 u |
57 u |
22 u |
11 u |
110 u |
10% →
10100=
110 Archie's savings : Total savings = 1 : 10
Pierre's savings = 20 u
20 u = 720
1 u = 720 ÷ 20 = 36
Archie's savings = 11 u
Savings of the other three boys
= 20 u + 57 u + 22 u
= 99 u
Savings that Archie had less than the total of the three other boys
= 99 u - 11 u
= 88 u
= 88 x 36
= $3168
Answer(s): $3168