Adam has some blue stickers and red stickers.
The number of blue stickers is decreased by 5% to 95.
The number of red stickers is decreased by 50% to 91.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Blue |
Before |
100% |
100% |
Change |
- 5% |
- 50% |
After |
95% = 95 |
50% = 91 |
(a)
100% - 5% = 95%
95% of green stickers = 95
100% of green stickers =
9595 x 100 = 100
100% - 50% = 50%
50% of blue stickers = 91
100% of blue stickers =
9150 x 100 = 182
Number of stickers at first
= 100% of green stickers + 100% of blue stickers
= 100 + 182
= 282
(b)
Number of stickers in the end
= 95 + 91
= 186
Answer(s): (a) 282; (b) 186