Sarah had 45 more stickers than Rachel. After Rachel gave away
13 of her stickers, Sarah had four times as many stickers as Rachel. How many stickers did Rachel have at first?
| |
Sarah |
Rachel |
Comparing Sarah and
Rachel at first |
45 more |
|
| Before |
8 u |
3 u |
| Change |
|
- 1 u |
| After |
8 u |
2 u |
Comparing Sarah and
Rachel in the end |
4x2 =
8 u |
1x2 =
2 u |
Number of stickers that Rachel had in the end is repeated. Make the number of stickers that Rachel had in the end the same. LCM of 1 and 2 is 2.
Number of stickers that Sarah had at first = 8 u
Number of stickers that Sarah had more than Rachel at first
= 8 u - 3 u
= 5 u
5 u = 45
1 u = 45 ÷ 5 = 9
Number of stickers that Rachel had at first
= 3 u
= 3 x 9
= 27
Answer(s): 27
