Four boys, Ethan, Charlie, Mark and George saved some money. Charlie's savings was
17 of the total savings of Ethan, Mark and George. Ethan's savings was 30% of the total savings. Mark's savings was
25 of the total savings of Charlie and George. If Charlie's savings was $115, how much less was Mark's savings than the total of the other three boys?
| Charlie |
George |
Mark |
Ethan |
Total |
| 1x5 |
7x5 |
8x5 |
| 7x4 |
3x4 |
10x4 |
| 5x4 |
2x4 |
|
|
| 5 u |
15 u |
8 u |
12 u |
40 u |
30% →
30100=
310 Ethan's savings : Total savings = 3 : 10
Charlie's savings = 5 u
5 u = 115
1 u = 115 ÷ 5 = 23
Mark's savings = 8 u
Savings of the other three boys
= 5 u + 15 u + 12 u
= 32 u
Savings that Mark had less than the total of the three other boys
= 32 u - 8 u
= 24 u
= 24 x 23
= $552
Answer(s): $552
