Adam has 120 blue stickers, green stickers and red stickers.
75% 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 |
3 u |
1 u |
|
50% |
50% |
|
1 u x 50% = 0.5 u
|
1 u x 50% = 0.5 u
|
75% =
75100 =
34 Total number of stickers = 4 u
Number of green stickers = 3 u
Number of blue and red stickers
= 4 u - 3 u
= 1 u
4 u = 120
1 u = 120 ÷ 4 = 30
(a)
Percent of remaining stickers that are red
= 100% - 50%
= 50%
Number of red stickers
= 50% x 1 u
= 0.5 x 1 u
= 0.5 u
= 0.5 x 30
= 15
(b)
Number of blue stickers
= 50% x 1 u
= 0.5 x 1 u
= 0.5 u
Number of green stickers = 3 u
Number of less blue stickers than green stickers
= 3 u - 0.5 u
= 2.5 u
= 2.5 x 30
= 75
Answer(s): (a) 15; (b) 75