Shannon and Tammy had an equal number of beads at first. Shannon used
12 of her beads and Tammy used
19 of her beads. They used 66 beads altogether. How many beads did Tammy have in the end?
|
Shannon |
Tammy |
Before |
2x9 = 18 u |
9x2 = 18 u |
Change |
- 1x9 = - 9 u |
- 1x2 = - 2 u |
After |
1x9 = 9 u |
8x2 = 16 u |
The number of beads that Shannon and Tammy each had at first is the same. Make the number of beads that Shannon and Tammy each had at first the same. LCM of 2 and 9 is 18.
Number of beads that Shannon and Tammy used
= 9 u + 2 u
= 11 u
11 u = 66
1 u = 66 ÷ 11 = 6
Number of beads that Tammy had in the end
= 16 u
= 16 x 6
= 96
Answer(s): 96