Adam has 120 blue stickers and green stickers.
60% of them are blue stickers and the rest are green stickers.
When Adam buys more blue stickers,
75% of the stickers are blue stickers.
How many stickers does Adam buy?
|
Blue |
Green |
Before |
3 x 1 = 3 u |
2 x 1 = 2 u |
Change |
+ ? |
No change |
After |
3 x 2 = 6 u |
1 x 2 = 2 u |
60% =
60100 =
3575% =
75100 =
34 The number of green stickers remains unchanged.
Make the number of green stickers the same using the LCM of 2 and 1.
LCM of 2 and 1 = 2
Total number of stickers at first
= 3 u + 2 u
= 5 u
5 u = 120
1 u = 120 ÷ 5 = 24
Number of stickers that Adam buys
= 6 u - 3 u
= 3 u
= 3 x 24
= 72
Answer(s): 72