John and David have a total of $152. If John gives David $19, they will each have an equal amount of money. How much money has each of them at first?
- John
- David
|
John |
David |
Total |
Before |
1 u + 19 |
1 u - 19 |
$152 |
Change |
- 19 |
+ 19 |
|
After |
1 u |
1 u |
$152 |
(a)
Total amount that John and David have in the end
= 1 u + 1 u
= 2 u
2 u = 152
1 u = 152 ÷ 2 = 76
Amount that John has at first
= 1 u + 19
= 76 + 19
= $95
Amount that David has at first
= 152 - 95
= $57
Answer(s): (a) $95; (b) $57