Adam has 130 yellow stickers, blue stickers, green stickers and red stickers.
10% of the stickers are yellow.
30% 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
|
3 u |
6 u |
10 u
|
|
|
1 p + 10 |
1 p |
|
(a)
10% =
10100 =
110 30% =
30100 =
310 Number of green and red stickers
= 10 u - 1 u - 3 u
= 6 u
10 u = 130
1 u = 130 ÷ 10 = 13
Number of green and red stickers
= 6 u
= 6 x 13
= 78
6 u = 2 p + 10
2 p + 10 = 78
2 p = 78 - 10
2 p = 68
1 p = 68 ÷ 2 = 34
Number of red stickers
= 1 p
= 34
(b)
Number of less yellow stickers than blue stickers
= 3 u - 1 u
= 2 u
= 2 x 13
= 26
Answer(s): (a) 34; (b) 26