Olivia used
25 of her blue stickers and
27 of her brown stickers to decorate her diary. In the end, she had an equal number of blue stickers and brown stickers left. Given that Olivia had a total of 276 blue and brown stickers at first, how many brown stickers did she use to decorate the diary?
|
Blue stickers |
Brown stickers |
Before |
5x5 = 25 u |
7x3 = 21 u |
Change |
- 2x5 = - 10 u |
- 2x3 = - 6 u |
After |
3x5 = 15 u |
5x3 = 15 u |
The number of blue stickers and brown stickers in the end is the same. Make the number of blue stickers and brown stickers in the end the same. LCM of 3 and 5 is 15.
Total number of stickers that Olivia used to decorate the diary
= 25 u + 21 u
= 46 u
46 u = 276
1 u = 276 ÷ 46 = 6
Number of brown stickers that Olivia used to decorate the diary
= 6 u
= 6 x 6
= 36
Answer(s): 36