Sabrina and Shannon had an equal number of marbles at first. Sabrina used
12 of her marbles and Shannon used
110 of her marbles. They used 36 marbles altogether. How many marbles did Shannon have in the end?
|
Sabrina |
Shannon |
Before |
2x5 = 10 u |
10x1 = 10 u |
Change |
- 1x5 = - 5 u |
- 1x1 = - 1 u |
After |
1x5 = 5 u |
9x1 = 9 u |
The number of marbles that Sabrina and Shannon each had at first is the same. Make the number of marbles that Sabrina and Shannon each had at first the same. LCM of 2 and 10 is 10.
Number of marbles that Sabrina and Shannon used
= 5 u + 1 u
= 6 u
6 u = 36
1 u = 36 ÷ 6 = 6
Number of marbles that Shannon had in the end
= 9 u
= 9 x 6
= 54
Answer(s): 54