Ethan and Luke have a total of $154. If Ethan gives Luke $21, they will each have an equal amount of money. How much money has each of them at first?
- Ethan
- Luke
|
Ethan |
Luke |
Total |
Before |
1 u + 21 |
1 u - 21 |
$154 |
Change |
- 21 |
+ 21 |
|
After |
1 u |
1 u |
$154 |
(a)
Total amount that Ethan and Luke have in the end
= 1 u + 1 u
= 2 u
2 u = 154
1 u = 154 ÷ 2 = 77
Amount that Ethan has at first
= 1 u + 21
= 77 + 21
= $98
Amount that Luke has at first
= 154 - 98
= $56
Answer(s): (a) $98; (b) $56