Last week, Kathy had twice as much savings as Dylan. This week, Dylan saves $200. As a result, he now has thrice as much savings as Kathy. What was their total savings at first?
| |
Kathy |
Dylan |
Total |
| Before |
2 u |
1 u |
3 u |
| Change |
|
+ $200 |
|
| After |
1x2 =
2 u |
3x2 =
6 u |
|
The amount of savings that Kathy has at first and in the end remains unchanged. Make the amount of savings that Kathy has the same. LCM of 2 and 1 is 2.
Amount that Dylan saved
= 6 u - 1 u
= 5 u
5 u = 200
1 u = 200 ÷ 5 = 40
Total savings at first
= 2 u + 1 u
= 3 u
= 3 x 40
= $120
Answer(s): $120
