Dana used
25 of her gold stickers and
34 of her green stickers to decorate her diary. In the end, she had an equal number of gold stickers and green stickers left. Given that Dana had a total of 34 gold and green stickers at first, how many green stickers did she use to decorate the diary?
|
Gold stickers |
Green stickers |
Before |
5x1 = 5 u |
4x3 = 12 u |
Change |
- 2x1 = - 2 u |
- 3x3 = - 9 u |
After |
3x1 = 3 u |
1x3 = 3 u |
The number of gold stickers and green stickers in the end is the same. Make the number of gold stickers and green stickers in the end the same. LCM of 3 and 1 is 3.
Total number of stickers that Dana used to decorate the diary
= 5 u + 12 u
= 17 u
17 u = 34
1 u = 34 ÷ 17 = 2
Number of green stickers that Dana used to decorate the diary
= 9 u
= 9 x 2
= 18
Answer(s): 18