Gillian and Andy went shopping with a total of $20. After Gillian spent
14 of her money and Andy spent
12 of his money, they each had an equal amount of money left. How much money did they spend altogether?
| |
Gillian |
Andy |
Total |
Before |
4 u |
2x3 =
6 u |
$20 |
Change |
- 1 u |
- 1x3 =
- 3 u |
|
After |
3 u |
1x3 =
3 u |
|
The amount that Gillian and Andy each had in the end is the same. Make the amount that each had in the end the same. LCM of 3 and 1 is 3.
Total amount that Gillian and Andy had at first
= 4 u + 6 u
= 10 u
10 u = 20
1 u = 20 ÷ 10 = 2
Total amount that Gillian and Andy spent
= 1 u + 3 u
= 4 u
= 4 x 2
= $8
Answer(s): $8
