Adam has 320 green stickers, blue stickers and red stickers.
40% of the stickers are blue.
25% of the remaining stickers are green.
The rest are red stickers.
- How many red stickers are there?
- How many less green stickers than blue stickers?
Blue |
Green |
Red |
2 u |
3 u |
|
25% |
75% |
|
3 u x 25% = 0.75 u
|
3 u x 75% = 2.25 u
|
40% =
40100 =
25 Total number of stickers = 5 u
Number of blue stickers = 2 u
Number of green and red stickers
= 5 u - 2 u
= 3 u
5 u = 320
1 u = 320 ÷ 5 = 64
(a)
Percent of remaining stickers that are red
= 100% - 25%
= 75%
Number of red stickers
= 75% x 3 u
= 0.75 x 3 u
= 2.25 u
= 2.25 x 64
= 144
(b)
Number of green stickers
= 25% x 3 u
= 0.25 x 3 u
= 0.75 u
Number of blue stickers = 2 u
Number of less green stickers than blue stickers
= 2 u - 0.75 u
= 1.25 u
= 1.25 x 64
= 80
Answer(s): (a) 144; (b) 80