Brandon had some cards at first. After he bought another 54 cards, he had four times as many cards as before. How many cards did Brandon have at first?
| |
Cards |
| Before |
1 u |
| Change |
+ 54 |
| After |
1 u + 54 = 4 u |
Number of cards after he bought = 1 u + 54
Number of cards that is four times as many cards as before = 4 x 1 u = 4 u
4 u = 1 u + 54
4 u - 1 u = 54
3 u = 54
1 u = 54 ÷ 3 = 18
Number of stickers that Kim had at first
= 1 u
= 18
Answer(s): 18
