Adam has 170 blue stickers, green stickers and red stickers.
40% of the stickers are green.
50% of the remaining stickers are blue.
The rest are red stickers.
- How many red stickers are there?
- How many less blue stickers than green stickers?
Green |
Blue |
Red |
2 u |
3 u |
|
50% |
50% |
|
3 u x 50% = 1.5 u
|
3 u x 50% = 1.5 u
|
40% =
40100 =
25 Total number of stickers = 5 u
Number of green stickers = 2 u
Number of blue and red stickers
= 5 u - 2 u
= 3 u
5 u = 170
1 u = 170 ÷ 5 = 34
(a)
Percent of remaining stickers that are red
= 100% - 50%
= 50%
Number of red stickers
= 50% x 3 u
= 0.5 x 3 u
= 1.5 u
= 1.5 x 34
= 51
(b)
Number of blue stickers
= 50% x 3 u
= 0.5 x 3 u
= 1.5 u
Number of green stickers = 2 u
Number of less blue stickers than green stickers
= 2 u - 1.5 u
= 0.5 u
= 0.5 x 34
= 17
Answer(s): (a) 51; (b) 17