Natalie and Luke went shopping with a total of $91. After Natalie spent
13 of her money and Luke spent
45 of his money, they each had an equal amount of money left. How much money did they spend altogether?
| |
Natalie |
Luke |
Total |
Before |
3 u |
5x2 =
10 u |
$91 |
Change |
- 1 u |
- 4x2 =
- 8 u |
|
After |
2 u |
1x2 =
2 u |
|
The amount that Natalie and Luke each had in the end is the same. Make the amount that each had in the end the same. LCM of 2 and 1 is 2.
Total amount that Natalie and Luke had at first
= 3 u + 10 u
= 13 u
13 u = 91
1 u = 91 ÷ 13 = 7
Total amount that Natalie and Luke spent
= 1 u + 8 u
= 9 u
= 9 x 7
= $63
Answer(s): $63
