Four boys, Elijah, Rael, Simon and Lee saved some money. Rael's savings was
25 of the total savings of Elijah, Simon and Lee. Elijah's savings was 30% of the total savings. Simon's savings was
25 of the total savings of Rael and Lee. If Rael's savings was $800, how much less was Elijah's savings than the total of the other three boys?
Rael |
Lee |
Simon |
Elijah |
Total |
2x10 |
5x10 |
7x10 |
7x7 |
3x7 |
10x7 |
5x7 |
2x7 |
|
|
20 u |
15 u |
14 u |
21 u |
70 u |
30% →
30100=
310 Elijah's savings : Total savings = 3 : 10
Rael's savings = 20 u
20 u = 800
1 u = 800 ÷ 20 = 40
Elijah's savings = 21 u
Savings of the other three boys
= 20 u + 15 u + 14 u
= 49 u
Savings that Elijah had less than the total of the three other boys
= 49 u - 21 u
= 28 u
= 28 x 40
= $1120
Answer(s): $1120