Opal and Andy went shopping with a total of $112. After Opal spent
47 of her money and Andy spent
23 of his money, they each had an equal amount of money left. How much money did they spend altogether?
| |
Opal |
Andy |
Total |
Before |
7 u |
3x3 =
9 u |
$112 |
Change |
- 4 u |
- 2x3 =
- 6 u |
|
After |
3 u |
1x3 =
3 u |
|
The amount that Opal 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 Opal and Andy had at first
= 7 u + 9 u
= 16 u
16 u = 112
1 u = 112 ÷ 16 = 7
Total amount that Opal and Andy spent
= 4 u + 6 u
= 10 u
= 10 x 7
= $70
Answer(s): $70
