Adam has 180 stickers in 3 colours.
25% of the stickers are blue.
The number of green stickers is
14 that of red stickers.
- What percentage of the stickers is red?
- How many green stickers are there?
Blue |
Green |
Red |
Total |
1 x 5 |
3 x 5 |
4 x 5 |
|
1 x 3 |
4 x 3 |
|
5 u |
3 u |
12 u |
20 u |
(a)
25% =
25100 =
14 The number of green and red stickers is the combined repeated identity.
Make the number of green and red stickers the same using the LCM of 3 and 5.
LCM of 3 and 5 = 15
Percentage of the stickers that is red
=
1220 x 100%
= 60%
(b)
Total number of stickers = 20 u
20 u = 180
1 u = 180 ÷ 20 = 9
Number of green stickers
= 3 u
= 3 x 9
= 27
Answer(s): (a) 60%; (b) 27