Tammy had
23 as much money as Natalie. Tammy received another $21 from her mother. In the end, Tammy's money became 1
14 of what Natalie had. How much did Tammy have at first?
|
Tammy |
Natalie |
Before |
2x4 = 8 u |
3x4 = 12 u |
Change |
+ $21 |
|
After |
5x3 = 15 u |
4x3 = 12 u |
1
14 =
54The amount that Natalie had at first and in the end remains unchanged. Make the amount that Natalie had the same. LCM of 4 and 3 is 12.
Amount that Tammy received
= 15 u - 8 u
= 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Amount that Tammy had at first
= 8 u
= 8 x 3
= $24
Answer(s): $24