Four boys, Pierre, Albert, Michael and Ken saved some money. Albert's savings was
311 of the total savings of Pierre, Michael and Ken. Pierre's savings was 25% of the total savings. Michael's savings was
12 of the total savings of Albert and Ken. If Albert's savings was $180, how much less was Pierre's savings than the total of the other three boys?
Albert |
Ken |
Michael |
Pierre |
Total |
3x2 |
11x2 |
14x2 |
3x7 |
1x7 |
4x7 |
2x7 |
1x7 |
|
|
6 u |
8 u |
7 u |
7 u |
28 u |
25% →
25100=
14 Pierre's savings : Total savings = 1 : 4
Albert's savings = 6 u
6 u = 180
1 u = 180 ÷ 6 = 30
Pierre's savings = 7 u
Savings of the other three boys
= 6 u + 8 u + 7 u
= 21 u
Savings that Pierre had less than the total of the three other boys
= 21 u - 7 u
= 14 u
= 14 x 30
= $420
Answer(s): $420