Last week, Sarah had four times as much savings as Charlie. This week, Charlie saves $770. As a result, he now has thrice as much savings as Sarah. What is their total savings now?
| |
Sarah |
Charlie |
Total |
| Before |
4 u |
1 u |
|
| Change |
|
+ $770 |
|
| After |
1x4 =
4 u |
3x4 =
12 u |
16 u |
The amount of savings that Sarah has at first and in the end remains unchanged. Make the amount of savings that Sarah has the same. LCM of 4 and 1 is 4.
Amount that Charlie saved
= 12 u - 1 u
= 11 u
11 u = 770
1 u = 770 ÷ 11 = 70
Total savings now
= 4 u + 12 u
= 16 u
= 16 x 70
= $1120
Answer(s): $1120
