Adam has 120 blue stickers, red stickers and green stickers.
40% of the stickers are red.
25% of the remaining stickers are blue.
The rest are green stickers.
- How many green stickers are there?
- How many less blue stickers than red stickers?
Red |
Blue |
Green |
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 red stickers = 2 u
Number of blue and green stickers
= 5 u - 2 u
= 3 u
5 u = 120
1 u = 120 ÷ 5 = 24
(a)
Percent of remaining stickers that are green
= 100% - 25%
= 75%
Number of green stickers
= 75% x 3 u
= 0.75 x 3 u
= 2.25 u
= 2.25 x 24
= 54
(b)
Number of blue stickers
= 25% x 3 u
= 0.25 x 3 u
= 0.75 u
Number of red stickers = 2 u
Number of less blue stickers than red stickers
= 2 u - 0.75 u
= 1.25 u
= 1.25 x 24
= 30
Answer(s): (a) 54; (b) 30