Adam has 120 blue stickers and green stickers.
45% of them are blue stickers and the rest are green stickers.
When Adam buys more blue stickers,
80% of the stickers are blue stickers.
How many stickers does Adam buy?
|
Blue |
Green |
Before |
9 x 1 = 9 u |
11 x 1 = 11 u |
Change |
+ ? |
No change |
After |
4 x 11 = 44 u |
1 x 11 = 11 u |
45% =
45100 =
92080% =
80100 =
45 The number of green stickers remains unchanged.
Make the number of green stickers the same using the LCM of 11 and 1.
LCM of 11 and 1 = 11
Total number of stickers at first
= 9 u + 11 u
= 20 u
20 u = 120
1 u = 120 ÷ 20 = 6
Number of stickers that Adam buys
= 44 u - 9 u
= 35 u
= 35 x 6
= 210
Answer(s): 210