Reggie had
310 as many cards as Kylie. After Reggie bought another 36 cards, he had 20 less cards than Kylie. How many cards did Reggie have at first?
| |
Reggie |
Kylie |
| Before |
3 u |
10 u |
| Change |
+ 36 |
|
| After |
3 u + 36 |
10 u |
Kylie had 20 more cards than Reggie in the end. So, if Reggie had another 20 cards, he would have the same number of cards as Kylie.
10 u = 3 u + 36 + 20
10 u - 3 u = 36 + 20
7 u = 56
1 u = 56 ÷ 7 = 8
Number of cards that Reggie had at first
= 3 u
= 3 x 8
= 24
Answer: 24
