Oliver and Xavier shared some erasers. Oliver took
511 of the erasers. After Oliver lost 18 erasers, Xavier had thrice as many erasers as Oliver. How many erasers did Xavier have in the end?
|
Oliver |
Xavier |
Before |
5 u |
6 u |
Change |
- 18 |
|
After |
1x2 = 2 u |
3x2 = 6 u |
The number of erasers that Xavier had remains the same. Make the number of erasers that Xavier had the same. LCM of 6 and 3 is 6.
Number of erasers that Oliver lost
= 5 u - 2 u
= 3 u
3 u = 18
1 u = 18 ÷ 3 = 6
Number of erasers that Xavier had in the end
= 6 u
= 6 x 6
= 36
Answer(s): 36