Adam has 320 stickers in 3 colours.
60% of the stickers are red.
The number of blue stickers is
35 that of green stickers.
- What percentage of the stickers is green?
- How many blue stickers are there?
Red |
Blue |
Green |
Total |
3 x 4 |
2 x 4 |
5 x 4 |
|
3 x 1 |
5 x 1 |
|
12 u |
3 u |
5 u |
20 u |
(a)
60% =
60100 =
35 The number of blue and green stickers is the combined repeated identity.
Make the number of blue and green stickers the same using the LCM of 2 and 8.
LCM of 2 and 8 = 8
Percentage of the stickers that is green
=
520 x 100%
= 25%
(b)
Total number of stickers = 20 u
20 u = 320
1 u = 320 ÷ 20 = 16
Number of blue stickers
= 3 u
= 3 x 16
= 48
Answer(s): (a) 25%; (b) 48