Ethan and Sam had the same number of cards at first. After Ethan had bought another 40 cards and Sam had lost 8 of his cards, Ethan had thrice as many cards as Sam. How many cards did each of them have at first?
| |
Sam |
Ethan |
| Before |
1 u + 8 |
3 u - 40 |
| Change |
- 8 |
+ 40 |
| After |
1 u |
3 u |
Ethan and Sam had the same number of cards at first.
3 u - 40 = 1 u + 8
3 u - 1 u = 8 + 40
2 u = 48
1 u = 48 ÷ 2 = 24
Number of cards that each of them had at first
= 1 u + 8
= 24 + 8
= 32
Answer(s): 32
