Adam has some blue stickers and green stickers.
The number of blue stickers is increased by 35% to 81.
The number of green stickers is increased by 40% to 56.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Blue |
Green |
Before |
100% |
100% |
Change |
+ 35% |
+ 40% |
After |
135% = 81 |
140% = 56 |
(a)
100% + 35% = 135%
135% of blue stickers = 81
100% of blue stickers =
81135 x 100 = 60
100% + 40% = 140%
140% of green stickers = 56
100% of green stickers =
56140 x 100 = 40
Number of stickers at first
= 100% of blue stickers + 100% of green stickers
= 60 + 40
= 100
(b)
Number of stickers in the end
= 81 + 56
= 137
Answer(s): (a) 100; (b) 137