Ivory and Tammy had an equal number of coins at first. Ivory used
13 of her coins and Tammy used
16 of her coins. They used 24 coins altogether. How many coins did Tammy have in the end?
| |
Ivory |
Tammy |
| Before |
3x2 =
6 u |
6x1 =
6 u |
| Change |
- 1x2 =
- 2 u |
- 1x1 =
- 1 u |
| After |
2x2 =
4 u |
5x1 =
5 u |
The number of coins that Ivory and Tammy each had at first is the same. Make the number of coins that Ivory and Tammy each had at first the same. LCM of 3 and 6 is 6.
Number of coins that Ivory and Tammy used
= 2 u + 1 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Number of coins that Tammy had in the end
= 5 u
= 5 x 8
= 40
Answer(s): 40
