Erika and Gillian collected stickers. Gillian gave 60% of her stickers to Erika. As a result, Erika's stickers increased by 25%. If Erika had 45 stickers left, find the total number of stickers the two girls had at first.
| |
Comparing the change
in Gillian's stickers |
Gillian |
Erika |
| Before |
5x1 =
5 u |
|
4x3 =
12 u |
| Change |
- 3x1 =
- 3 u |
- 1x3 =
- 3 u |
+ 1x3 =
+ 3 u |
| After |
2x1 =
2 u |
|
5x3 =
15 u |
60% =
60100 =
35 25% =
25100 =
14 The number of stickers that Erika gave to Gillian is repeated. Make the number of stickers that Erika gave to Gillian the same. LCM of 1 and 3 is 3.
Number of stickers that Erika had in the end = 15 u
15 u = 45
1 u = 45 ÷ 15 = 3
Number of stickers that Gillian and Erika had at first
= 5 u + 12 u
= 17 u
= 17 x 3
= 51
Answer(s): 51
