Four boys, Tommy, Ryan, Daniel and Andy saved some money. Ryan's savings was
12 of the total savings of Tommy, Daniel and Andy. Tommy's savings was 30% of the total savings. Daniel's savings was
25 of the total savings of Ryan and Andy. If Ryan's savings was $180, how much less was Tommy's savings than the total of the other three boys?
Ryan |
Andy |
Daniel |
Tommy |
Total |
1x10 |
2x10 |
3x10 |
7x3 |
3x3 |
10x3 |
5x3 |
2x3 |
|
|
10 u |
5 u |
6 u |
9 u |
30 u |
30% →
30100=
310 Tommy's savings : Total savings = 3 : 10
Ryan's savings = 10 u
10 u = 180
1 u = 180 ÷ 10 = 18
Tommy's savings = 9 u
Savings of the other three boys
= 10 u + 5 u + 6 u
= 21 u
Savings that Tommy had less than the total of the three other boys
= 21 u - 9 u
= 12 u
= 12 x 18
= $216
Answer(s): $216