Last Tuesday, Pierre had twice as many cards as Liam. Today, Pierre gives 63 of his cards to his best friend. Now, Liam has four times as many cards as Pierre. How many cards does Liam have?
| |
Pierre |
Liam |
| Before |
2x4 =
8 u |
1x4 =
4 u |
| Change |
- 63 |
|
| After |
1 u |
4 u |
The number of cards that Liam had at first and in the end remains unchanged. Make the number of cards that Liam has the same. LCM of 1 and 4 is 4.
Number of cards that Pierre gives to his best friend
= 8 u - 1 u
= 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Number of cards that Liam has
= 4 u
= 4 x 9
= 36
Answer(s): 36
