Erika used
37 of her blue stickers and
27 of her pink stickers to decorate her diary. In the end, she had an equal number of blue stickers and pink stickers left. Given that Erika had a total of 567 blue and pink stickers at first, how many pink stickers did she use to decorate the diary?
|
Blue stickers |
Pink stickers |
Before |
7x5 = 35 u |
7x4 = 28 u |
Change |
- 3x5 = - 15 u |
- 2x4 = - 8 u |
After |
4x5 = 20 u |
5x4 = 20 u |
The number of blue stickers and pink stickers in the end is the same. Make the number of blue stickers and pink stickers in the end the same. LCM of 4 and 5 is 20.
Total number of stickers that Erika used to decorate the diary
= 35 u + 28 u
= 63 u
63 u = 567
1 u = 567 ÷ 63 = 9
Number of pink stickers that Erika used to decorate the diary
= 8 u
= 8 x 9
= 72
Answer(s): 72