Adam has some blue stickers and red stickers.
The number of blue stickers is decreased by 25% to 87.
The number of red stickers is decreased by 50% to 88.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Blue |
Before |
100% |
100% |
Change |
- 25% |
- 50% |
After |
75% = 87 |
50% = 88 |
(a)
100% - 25% = 75%
75% of green stickers = 87
100% of green stickers =
8775 x 100 = 116
100% - 50% = 50%
50% of blue stickers = 88
100% of blue stickers =
8850 x 100 = 176
Number of stickers at first
= 100% of green stickers + 100% of blue stickers
= 116 + 176
= 292
(b)
Number of stickers in the end
= 87 + 88
= 175
Answer(s): (a) 292; (b) 175