Adam has 250 red stickers, blue stickers and green stickers.
30% of the stickers are blue.
40% of the remaining stickers are red.
The rest are green stickers.
- How many green stickers are there?
- How many less red stickers than blue stickers?
Blue |
Red |
Green |
3 u |
7 u |
|
40% |
60% |
|
7 u x 40% = 2.8 u
|
7 u x 60% = 4.2 u
|
30% =
30100 =
310 Total number of stickers = 10 u
Number of blue stickers = 3 u
Number of red and green stickers
= 10 u - 3 u
= 7 u
10 u = 250
1 u = 250 ÷ 10 = 25
(a)
Percent of remaining stickers that are green
= 100% - 40%
= 60%
Number of green stickers
= 60% x 7 u
= 0.6 x 7 u
= 4.2 u
= 4.2 x 25
= 105
(b)
Number of red stickers
= 40% x 7 u
= 0.4 x 7 u
= 2.8 u
Number of blue stickers = 3 u
Number of less red stickers than blue stickers
= 3 u - 2.8 u
= 0.2 u
= 0.2 x 25
= 5
Answer(s): (a) 105; (b) 5