Adam has some green stickers and blue stickers.
The number of green stickers is increased by 40% to 77.
The number of blue stickers is increased by 50% to 87.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Blue |
Before |
100% |
100% |
Change |
+ 40% |
+ 50% |
After |
140% = 77 |
150% = 87 |
(a)
100% + 40% = 140%
140% of green stickers = 77
100% of green stickers =
77140 x 100 = 55
100% + 50% = 150%
150% of blue stickers = 87
100% of blue stickers =
87150 x 100 = 58
Number of stickers at first
= 100% of green stickers + 100% of blue stickers
= 55 + 58
= 113
(b)
Number of stickers in the end
= 77 + 87
= 164
Answer(s): (a) 113; (b) 164