Luis and Jack shared some cards. Luis took
37 of the cards. After Luis lost 20 cards, Jack had four times as many cards as Luis. How many cards did Jack have in the end?
| |
Luis |
Jack |
| Before |
3 u |
4 u |
| Change |
- 20 |
|
| After |
1x1 =
1 u |
4x1 =
4 u |
The number of cards that Jack had remains the same. Make the number of cards that Jack had the same. LCM of 4 and 4 is 4.
Number of cards that Luis lost
= 3 u - 1 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Number of cards that Jack had in the end
= 4 u
= 4 x 10
= 40
Answer(s): 40
