Adam has 320 red stickers, blue stickers and green stickers.
75% of the stickers are blue.
75% 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 |
1 u |
|
75% |
25% |
|
1 u x 75% = 0.75 u
|
1 u x 25% = 0.25 u
|
75% =
75100 =
34 Total number of stickers = 4 u
Number of blue stickers = 3 u
Number of red and green stickers
= 4 u - 3 u
= 1 u
4 u = 320
1 u = 320 ÷ 4 = 80
(a)
Percent of remaining stickers that are green
= 100% - 75%
= 25%
Number of green stickers
= 25% x 1 u
= 0.25 x 1 u
= 0.25 u
= 0.25 x 80
= 20
(b)
Number of red stickers
= 75% x 1 u
= 0.75 x 1 u
= 0.75 u
Number of blue stickers = 3 u
Number of less red stickers than blue stickers
= 3 u - 0.75 u
= 2.25 u
= 2.25 x 80
= 180
Answer(s): (a) 20; (b) 180