Four boys, Ryan, Tommy, Eric and Reggie saved some money. Tommy's savings was
12 of the total savings of Ryan, Eric and Reggie. Ryan's savings was 30% of the total savings. Eric's savings was
34 of the total savings of Tommy and Reggie. If Tommy's savings was $180, how much less was Ryan's savings than the total of the other three boys?
Tommy |
Reggie |
Eric |
Ryan |
Total |
1x10 |
2x10 |
3x10 |
7x3 |
3x3 |
10x3 |
4x3 |
3x3 |
|
|
10 u |
2 u |
9 u |
9 u |
30 u |
30% →
30100=
310 Ryan's savings : Total savings = 3 : 10
Tommy's savings = 10 u
10 u = 180
1 u = 180 ÷ 10 = 18
Ryan's savings = 9 u
Savings of the other three boys
= 10 u + 2 u + 9 u
= 21 u
Savings that Ryan had less than the total of the three other boys
= 21 u - 9 u
= 12 u
= 12 x 18
= $216
Answer(s): $216