Adam has some green stickers and blue stickers.
The number of green stickers is increased by 10% to 88.
The number of blue stickers is increased by 50% to 57.
- How many stickers are there at first?
- How many stickers are there in the end?
|
Green |
Blue |
Before |
100% |
100% |
Change |
+ 10% |
+ 50% |
After |
110% = 88 |
150% = 57 |
(a)
100% + 10% = 110%
110% of green stickers = 88
100% of green stickers =
88110 x 100 = 80
100% + 50% = 150%
150% of blue stickers = 57
100% of blue stickers =
57150 x 100 = 38
Number of stickers at first
= 100% of green stickers + 100% of blue stickers
= 80 + 38
= 118
(b)
Number of stickers in the end
= 88 + 57
= 145
Answer(s): (a) 118; (b) 145