Luke and Mark had the same number of cards at first. After Luke had bought another 32 cards and Mark had lost 10 of his cards, Luke had four times as many cards as Mark. How many cards did each of them have at first?
| |
Mark |
Luke |
| Before |
1 u + 10 |
4 u - 32 |
| Change |
- 10 |
+ 32 |
| After |
1 u |
4 u |
Luke and Mark had the same number of cards at first.
4 u - 32 = 1 u + 10
4 u - 1 u = 10 + 32
3 u = 42
1 u = 42 ÷ 3 = 14
Number of cards that each of them had at first
= 1 u + 10
= 14 + 10
= 24
Answer(s): 24
