Adam has some blue stickers and green stickers.
The number of blue stickers is increased by 25% to 80.
The number of green stickers is increased by 50% to 84.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Blue |
Green |
Before |
100% |
100% |
Change |
+ 25% |
+ 50% |
After |
125% = 80 |
150% = 84 |
(a)
100% + 25% = 125%
125% of blue stickers = 80
100% of blue stickers =
80125 x 100 = 64
100% + 50% = 150%
150% of green stickers = 84
100% of green stickers =
84150 x 100 = 56
Number of stickers at first
= 100% of blue stickers + 100% of green stickers
= 64 + 56
= 120
(b)
Number of stickers in the end
= 80 + 84
= 164
Answer(s): (a) 120; (b) 164