Last month, Mary had twice as much savings as Vincent. This month, Vincent saves $140. As a result, he now has four times as much savings as Mary. What is their total savings now?
| |
Mary |
Vincent |
Total |
| Before |
2 u |
1 u |
|
| Change |
|
+ $140 |
|
| After |
1x2 =
2 u |
4x2 =
8 u |
10 u |
The amount of savings that Mary has at first and in the end remains unchanged. Make the amount of savings that Mary has the same. LCM of 2 and 1 is 2.
Amount that Vincent saved
= 8 u - 1 u
= 7 u
7 u = 140
1 u = 140 ÷ 7 = 20
Total savings now
= 2 u + 8 u
= 10 u
= 10 x 20
= $200
Answer(s): $200
