Adam has 340 green stickers and red stickers.
55% of them are green stickers and the rest are red stickers.
When Adam buys more green stickers,
80% of the stickers are green stickers.
How many stickers does Adam buy?
|
Green |
Red |
Before |
11 x 1 = 11 u |
9 x 1 = 9 u |
Change |
+ ? |
No change |
After |
4 x 9 = 36 u |
1 x 9 = 9 u |
55% =
55100 =
112080% =
80100 =
45 The number of red stickers remains unchanged.
Make the number of red stickers the same using the LCM of 9 and 1.
LCM of 9 and 1 = 9
Total number of stickers at first
= 11 u + 9 u
= 20 u
20 u = 340
1 u = 340 ÷ 20 = 17
Number of stickers that Adam buys
= 36 u - 11 u
= 25 u
= 25 x 17
= 425
Answer(s): 425