Usha and Mark went shopping with a total of $33. After Usha spent
13 of her money and Mark spent
34 of his money, they each had an equal amount of money left. How much money did they spend altogether?
| |
Usha |
Mark |
Total |
Before |
3 u |
4x2 =
8 u |
$33 |
Change |
- 1 u |
- 3x2 =
- 6 u |
|
After |
2 u |
1x2 =
2 u |
|
The amount that Usha and Mark 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 Usha and Mark had at first
= 3 u + 8 u
= 11 u
11 u = 33
1 u = 33 ÷ 11 = 3
Total amount that Usha and Mark spent
= 1 u + 6 u
= 7 u
= 7 x 3
= $21
Answer(s): $21
