Adam has some blue stickers and red stickers.
The number of blue stickers is decreased by 40% to 96.
The number of red stickers is decreased by 50% to 82.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Blue |
Before |
100% |
100% |
Change |
- 40% |
- 50% |
After |
60% = 96 |
50% = 82 |
(a)
100% - 40% = 60%
60% of green stickers = 96
100% of green stickers =
9660 x 100 = 160
100% - 50% = 50%
50% of blue stickers = 82
100% of blue stickers =
8250 x 100 = 164
Number of stickers at first
= 100% of green stickers + 100% of blue stickers
= 160 + 164
= 324
(b)
Number of stickers in the end
= 96 + 82
= 178
Answer(s): (a) 324; (b) 178