Adam has 400 green stickers, red stickers and blue stickers.
75% of the stickers are red.
60% of the remaining stickers are green.
The rest are blue stickers.
- How many blue stickers are there?
- How many less green stickers than red stickers?
Red |
Green |
Blue |
3 u |
1 u |
|
60% |
40% |
|
1 u x 60% = 0.6 u
|
1 u x 40% = 0.4 u
|
75% =
75100 =
34 Total number of stickers = 4 u
Number of red stickers = 3 u
Number of green and blue stickers
= 4 u - 3 u
= 1 u
4 u = 400
1 u = 400 ÷ 4 = 100
(a)
Percent of remaining stickers that are blue
= 100% - 60%
= 40%
Number of blue stickers
= 40% x 1 u
= 0.4 x 1 u
= 0.4 u
= 0.4 x 100
= 40
(b)
Number of green stickers
= 60% x 1 u
= 0.6 x 1 u
= 0.6 u
Number of red stickers = 3 u
Number of less green stickers than red stickers
= 3 u - 0.6 u
= 2.4 u
= 2.4 x 100
= 240
Answer(s): (a) 40; (b) 240