Adam has 110 green stickers, blue stickers, yellow stickers and red stickers.
10% of the stickers are green.
30% of the stickers are blue.
The rest are yellow and red stickers.
There are 10 more yellow stickers than red stickers.
- How many red stickers are there?
- How many less green stickers than blue stickers?
Green
|
Blue
|
Yellow
|
Red
|
Total
|
1 u
|
3 u |
6 u |
10 u
|
|
|
1 p + 10 |
1 p |
|
(a)
10% =
10100 =
110 30% =
30100 =
310 Number of yellow and red stickers
= 10 u - 1 u - 3 u
= 6 u
10 u = 110
1 u = 110 ÷ 10 = 11
Number of yellow and red stickers
= 6 u
= 6 x 11
= 66
6 u = 2 p + 10
2 p + 10 = 66
2 p = 66 - 10
2 p = 56
1 p = 56 ÷ 2 = 28
Number of red stickers
= 1 p
= 28
(b)
Number of less green stickers than blue stickers
= 3 u - 1 u
= 2 u
= 2 x 11
= 22
Answer(s): (a) 28; (b) 22