Last Wednesday, Owen had thrice as many buttons as Luis. Today, Owen gives 110 of his buttons to his buddy. Now, Luis has four times as many buttons as Owen. How many buttons does Luis have?
| |
Owen |
Luis |
| Before |
3x4 =
12 u |
1x4 =
4 u |
| Change |
- 110 |
|
| After |
1 u |
4 u |
The number of buttons that Luis had at first and in the end remains unchanged. Make the number of buttons that Luis has the same. LCM of 1 and 4 is 4.
Number of buttons that Owen gives to his buddy
= 12 u - 1 u
= 11 u
11 u = 110
1 u = 110 ÷ 11 = 10
Number of buttons that Luis has
= 4 u
= 4 x 10
= 40
Answer(s): 40
