Hazel used
34 of her pink stickers and
25 of her brown stickers to decorate her diary. In the end, she had an equal number of pink stickers and brown stickers left. Given that Hazel had a total of 170 pink and brown stickers at first, how many brown stickers did she use to decorate the diary?
| |
Pink stickers |
Brown stickers |
| Before |
4x3 =
12 u |
5x1 =
5 u |
| Change |
- 3x3 =
- 9 u |
- 2x1 =
- 2 u |
| After |
1x3 =
3 u |
3x1 =
3 u |
The number of pink stickers and brown stickers in the end is the same. Make the number of pink stickers and brown stickers in the end the same. LCM of 1 and 3 is 3.
Total number of stickers that Hazel used to decorate the diary
= 12 u + 5 u
= 17 u
17 u = 170
1 u = 170 ÷ 17 = 10
Number of brown stickers that Hazel used to decorate the diary
= 2 u
= 2 x 10
= 20
Answer(s): 20
