Tammy had 25 more chocolate bars than Eva. Tammy used
45 of her chocolate bars and Eva used
45 of her chocolate bars. In the end, Tammy had 2 times as much as Eva. Find the number of chocolate bars that Eva had at first.
|
Tammy |
Eva |
Comparing Tammy and Parry at first |
25 more |
|
Before |
5x2 = 10 u |
5 u |
Change |
- 4x2 = - 8 u |
- 4 u |
After |
1x2 = 2 u |
1 u |
Comparing Tammy and Parry in the end |
2 u |
1 u |
The number of chocolate bars that Tammy had in the end is repeated. Make the number of chocolate bars that Tammy had in the end the same. LCM of 1 and 2 is 2.
Number of chocolate bars that Tammy had more than Eva
= 10 u - 5 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Number of chocolate bars that Eva had at first
= 5 u
= 5 x 5
= 25
Answer(s): 25