Elijah had some coins at first. After he bought another 45 coins, he had four times as many coins as before. How many coins did Elijah have at first?
|
Coins |
Before |
1 u |
Change |
+ 45 |
After |
1 u + 45 = 4 u |
Number of coins after he bought = 1 u + 45
Number of coins that is four times as many coins as before = 4 x 1 u = 4 u
4 u = 1 u + 45
4 u - 1 u = 45
3 u = 45
1 u = 45 ÷ 3 = 15
Number of stickers that Kim had at first
= 1 u
= 15
Answer(s): 15