Jaslyn has a bag containing some pink and red stickers. If she removes 9 pink stickers, 40% of the stickers in the bag are red. If she removes another 35 red stickers, 20% of the stickers in the bag are red. How many pink stickers are in the bag?
| |
Pink stickers |
Red stickers |
| Before |
12 u + 9 |
8 u |
| Change 1 |
- 9 |
|
| After 1 |
3x4 =
12 u |
2x4 =
8 u |
| Change 2 |
|
- 35 |
| After 2 |
4x3 =
12 u |
1x3 =
3 u |
40% =
40100 =
2520% =
20100 =
15The number of pink stickers remains unchanged at the second change when she removes another 35 red stickers. Make the number of pink stickers the same at the second change. LCM of 3 and 4 is 12.
Number of red stickers removed
= 8 u - 3 u
= 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Number of pink stickers at first
= 12 u + 9
= 12 x 7 + 9
= 84 + 9
= 93
Answer(s): 93
