Adam has 160 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 less yellow stickers than blue 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 = 160
1 u = 160 ÷ 20 = 8
Number of green and red stickers
= 12 u
= 12 x 8
= 96
12 u = 2 p + 10
2 p + 10 = 96
2 p = 96 - 10
2 p = 86
1 p = 86 ÷ 2 = 43
Number of red stickers
= 1 p
= 43
(b)
Number of less yellow stickers than blue stickers
= 7 u - 1 u
= 6 u
= 6 x 8
= 48
Answer(s): (a) 43; (b) 48