Simon and Andy received a total of $420. After Simon spent
45 of his money and Andy spent
45 of his money, Andy had 3 times as much money as Simon. How much money did Andy have at first?
| |
Simon |
Andy |
Total |
Before |
5 u |
5x3 =
15 u |
20 u |
Change |
- 4 u |
- 4x3 =
- 12 u |
|
After |
1 u |
1x3 =
3 u |
|
Comparing Simon
and Andy in the end |
1 u |
3 u |
|
The amount that Andy had in the end is the same. Make the amount that Andy had in the end the same. LCM of 1 and 3 is 3.
Total amount that Andy and Simon had at first
= 5 u + 15 u
= 20 u
20 u = 420
1 u = 420 ÷ 20 = 21
Amount that Andy had at first
= 15 u
= 15 x 21
= $315
Answer(s): $315
