Nicole and Opal collected stickers. Opal gave 60% of her stickers to Nicole. As a result, Nicole's stickers increased by 40%. If Nicole had 126 stickers left, find the total number of stickers the two girls had at first.
| |
Comparing the change
in Opal's stickers |
Opal |
Nicole |
| Before |
5x2 =
10 u |
|
5x3 =
15 u |
| Change |
- 3x2 =
- 6 u |
- 2x3 =
- 6 u |
+ 2x3 =
+ 6 u |
| After |
2x2 =
4 u |
|
7x3 =
21 u |
60% =
60100 =
35 40% =
40100 =
25 The number of stickers that Nicole gave to Opal is repeated. Make the number of stickers that Nicole gave to Opal the same. LCM of 2 and 3 is 6.
Number of stickers that Nicole had in the end = 21 u
21 u = 126
1 u = 126 ÷ 21 = 6
Number of stickers that Opal and Nicole had at first
= 10 u + 15 u
= 25 u
= 25 x 6
= 150
Answer(s): 150
