Adam has 160 red stickers, green stickers, yellow stickers and blue stickers.
10% of the stickers are red.
30% of the stickers are green.
The rest are yellow and blue stickers.
There are 10 more yellow stickers than blue stickers.
- How many blue stickers are there?
- How many less red stickers than green stickers?
Red
|
Green
|
Yellow
|
Blue
|
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 blue stickers
= 10 u - 1 u - 3 u
= 6 u
10 u = 160
1 u = 160 ÷ 10 = 16
Number of yellow and blue stickers
= 6 u
= 6 x 16
= 96
6 u = 2 p + 10
2 p + 10 = 96
2 p = 96 - 10
2 p = 86
1 p = 86 ÷ 2 = 43
Number of blue stickers
= 1 p
= 43
(b)
Number of less red stickers than green stickers
= 3 u - 1 u
= 2 u
= 2 x 16
= 32
Answer(s): (a) 43; (b) 32