Adam has 280 red stickers, blue stickers and green stickers.
30% of the stickers are blue.
25% of the remaining stickers are red.
The rest are green stickers.
- How many green stickers are there?
- How many less red stickers than blue stickers?
Blue |
Red |
Green |
3 u |
7 u |
|
25% |
75% |
|
7 u x 25% = 1.75 u
|
7 u x 75% = 5.25 u
|
30% =
30100 =
310 Total number of stickers = 10 u
Number of blue stickers = 3 u
Number of red and green stickers
= 10 u - 3 u
= 7 u
10 u = 280
1 u = 280 ÷ 10 = 28
(a)
Percent of remaining stickers that are green
= 100% - 25%
= 75%
Number of green stickers
= 75% x 7 u
= 0.75 x 7 u
= 5.25 u
= 5.25 x 28
= 147
(b)
Number of red stickers
= 25% x 7 u
= 0.25 x 7 u
= 1.75 u
Number of blue stickers = 3 u
Number of less red stickers than blue stickers
= 3 u - 1.75 u
= 1.25 u
= 1.25 x 28
= 35
Answer(s): (a) 147; (b) 35