Irene and Sam went shopping with a total of $60. After Irene spent
25 of her money and Sam spent
45 of his money, they each had an equal amount of money left. How much money did they spend altogether?
| |
Irene |
Sam |
Total |
Before |
5 u |
5x3 =
15 u |
$60 |
Change |
- 2 u |
- 4x3 =
- 12 u |
|
After |
3 u |
1x3 =
3 u |
|
The amount that Irene and Sam 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 Irene and Sam had at first
= 5 u + 15 u
= 20 u
20 u = 60
1 u = 60 ÷ 20 = 3
Total amount that Irene and Sam spent
= 2 u + 12 u
= 14 u
= 14 x 3
= $42
Answer(s): $42
