Adam has 210 blue stickers, red stickers and green stickers.
60% 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 |
3 u |
2 u |
|
25% |
75% |
|
2 u x 25% = 0.5 u
|
2 u x 75% = 1.5 u
|
60% =
60100 =
35 Total number of stickers = 5 u
Number of red stickers = 3 u
Number of blue and green stickers
= 5 u - 3 u
= 2 u
5 u = 210
1 u = 210 ÷ 5 = 42
(a)
Percent of remaining stickers that are green
= 100% - 25%
= 75%
Number of green stickers
= 75% x 2 u
= 0.75 x 2 u
= 1.5 u
= 1.5 x 42
= 63
(b)
Number of blue stickers
= 25% x 2 u
= 0.25 x 2 u
= 0.5 u
Number of red stickers = 3 u
Number of less blue stickers than red stickers
= 3 u - 0.5 u
= 2.5 u
= 2.5 x 42
= 105
Answer(s): (a) 63; (b) 105