Four boys, Tom, Sam, Fred and Xavier saved some money. Sam's savings was
311 of the total savings of Tom, Fred and Xavier. Tom's savings was 30% of the total savings. Fred's savings was
25 of the total savings of Sam and Xavier. If Sam's savings was $360, how much less was Tom's savings than the total of the other three boys?
Sam |
Xavier |
Fred |
Tom |
Total |
3x5 |
11x5 |
14x5 |
7x7 |
3x7 |
10x7 |
5x7 |
2x7 |
|
|
15 u |
20 u |
14 u |
21 u |
70 u |
30% →
30100=
310 Tom's savings : Total savings = 3 : 10
Sam's savings = 15 u
15 u = 360
1 u = 360 ÷ 15 = 24
Tom's savings = 21 u
Savings of the other three boys
= 15 u + 20 u + 14 u
= 49 u
Savings that Tom had less than the total of the three other boys
= 49 u - 21 u
= 28 u
= 28 x 24
= $672
Answer(s): $672