Adam has 110 yellow stickers, blue stickers, green stickers and red stickers.
5% of the stickers are yellow.
35% of the stickers are blue.
The rest are green and red stickers.
There are 10 more green stickers than red stickers.
- How many red stickers are there?
- How many more blue stickers than yellow stickers?
Yellow
|
Blue
|
Green
|
Red
|
Total
|
1 u |
7 u |
12 u
|
20 u
|
|
|
1 p + 10 |
1 p |
|
(a)
5% =
5100 =
120 35% =
35100 =
720 Number of green and red stickers
= 20 u - 1 u - 7 u
= 12 u
20 u = 110
1 u = 110 ÷ 20 = 5.5
Number of green and red stickers
= 12 u
= 12 x 5.5
= 66
12 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 more blue stickers than yellow stickers
= 7 u - 1 u
= 6 u
= 6 x 5.5
= 33
Answer(s): (a) 28; (b) 33