Adam has some blue stickers and red stickers.
The number of blue stickers is increased by 40% to 84.
The number of red stickers is decreased by 50% to 98.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Red |
Before |
100% |
100% |
Change |
+ 40% |
- 50% |
After |
140% = 84 |
50% = 98 |
(a)
100% - 40% = 140%
140% of green stickers = 84
100% of green stickers =
84140 x 100 = 60
100% - 50% = 50%
50% of red stickers = 98
100% of red stickers =
9850 x 100 = 196
Number of stickers at first
= 100% of green stickers + 100% of red stickers
= 60 + 196
= 256
(b)
Number of stickers in the end
= 84 + 98
= 182
Answer(s): (a) 256; (b) 182