Adam has some blue stickers and green stickers.
The number of blue stickers is increased by 5% to 63.
The number of green stickers is increased by 40% to 91.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Blue |
Green |
Before |
100% |
100% |
Change |
+ 5% |
+ 40% |
After |
105% = 63 |
140% = 91 |
(a)
100% + 5% = 105%
105% of blue stickers = 63
100% of blue stickers =
63105 x 100 = 60
100% + 40% = 140%
140% of green stickers = 91
100% of green stickers =
91140 x 100 = 65
Number of stickers at first
= 100% of blue stickers + 100% of green stickers
= 60 + 65
= 125
(b)
Number of stickers in the end
= 63 + 91
= 154
Answer(s): (a) 125; (b) 154