Adam has 170 red stickers, yellow stickers, green stickers and blue stickers.
10% of the stickers are red.
30% of the stickers are yellow.
The rest are green and blue stickers.
There are 10 more green stickers than blue stickers.
- How many blue stickers are there?
- How many less red stickers than yellow stickers?
Red
|
Yellow
|
Green
|
Blue
|
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 blue stickers
= 10 u - 1 u - 3 u
= 6 u
10 u = 170
1 u = 170 ÷ 10 = 17
Number of green and blue stickers
= 6 u
= 6 x 17
= 102
6 u = 2 p + 10
2 p + 10 = 102
2 p = 102 - 10
2 p = 92
1 p = 92 ÷ 2 = 46
Number of blue stickers
= 1 p
= 46
(b)
Number of less red stickers than yellow stickers
= 3 u - 1 u
= 2 u
= 2 x 17
= 34
Answer(s): (a) 46; (b) 34