Adam has 140 red stickers, yellow stickers, blue stickers and green stickers.
10% of the stickers are red.
30% of the stickers are yellow.
The rest are blue and green stickers.
There are 10 more blue stickers than green stickers.
- How many green stickers are there?
- How many more yellow stickers than red stickers?
Red
|
Yellow
|
Blue
|
Green
|
Total
|
1 u |
3 u |
6 u
|
10 u
|
|
|
1 p + 10 |
1 p |
|
(a)
10% =
10100 =
110 30% =
30100 =
310 Number of blue and green stickers
= 10 u - 1 u - 3 u
= 6 u
10 u = 140
1 u = 140 ÷ 10 = 14
Number of blue and green stickers
= 6 u
= 6 x 14
= 84
6 u = 2 p + 10
2 p + 10 = 84
2 p = 84 - 10
2 p = 74
1 p = 74 ÷ 2 = 37
Number of green stickers
= 1 p
= 37
(b)
Number of more yellow stickers than red stickers
= 3 u - 1 u
= 2 u
= 2 x 14
= 28
Answer(s): (a) 37; (b) 28