Tammy used
37 of her green stickers and
27 of her blue stickers to decorate her diary. In the end, she had an equal number of green stickers and blue stickers left. Given that Tammy had a total of 630 green and blue stickers at first, how many blue stickers did she use to decorate the diary?
|
Green stickers |
Blue 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 green stickers and blue stickers in the end is the same. Make the number of green stickers and blue stickers in the end the same. LCM of 4 and 5 is 20.
Total number of stickers that Tammy used to decorate the diary
= 35 u + 28 u
= 63 u
63 u = 630
1 u = 630 ÷ 63 = 10
Number of blue stickers that Tammy used to decorate the diary
= 8 u
= 8 x 10
= 80
Answer(s): 80