Adam has 290 red stickers, blue stickers, yellow stickers and green stickers.
5% of the stickers are red.
35% of the stickers are blue.
The rest are yellow and green stickers.
There are 10 more yellow stickers than green stickers.
- How many green stickers are there?
- How many more blue stickers than red stickers?
Red
|
Blue
|
Yellow
|
Green
|
Total
|
1 u |
7 u |
12 u
|
20 u
|
|
|
1 p + 10 |
1 p |
|
(a)
5% =
5100 =
120 35% =
35100 =
720 Number of yellow and green stickers
= 20 u - 1 u - 7 u
= 12 u
20 u = 290
1 u = 290 ÷ 20 = 14.5
Number of yellow and green stickers
= 12 u
= 12 x 14.5
= 174
12 u = 2 p + 10
2 p + 10 = 174
2 p = 174 - 10
2 p = 164
1 p = 164 ÷ 2 = 82
Number of green stickers
= 1 p
= 82
(b)
Number of more blue stickers than red stickers
= 7 u - 1 u
= 6 u
= 6 x 14.5
= 87
Answer(s): (a) 82; (b) 87