Adam has 260 green stickers, yellow stickers, blue stickers and red stickers.
5% of the stickers are green.
15% of the stickers are yellow.
The rest are blue and red stickers.
There are 10 more blue stickers than red stickers.
- How many red stickers are there?
- How many more yellow stickers than green stickers?
Green
|
Yellow
|
Blue
|
Red
|
Total
|
1 u |
3 u |
16 u
|
20 u
|
|
|
1 p + 10 |
1 p |
|
(a)
5% =
5100 =
120 15% =
15100 =
320 Number of blue and red stickers
= 20 u - 1 u - 3 u
= 16 u
20 u = 260
1 u = 260 ÷ 20 = 13
Number of blue and red stickers
= 16 u
= 16 x 13
= 208
16 u = 2 p + 10
2 p + 10 = 208
2 p = 208 - 10
2 p = 198
1 p = 198 ÷ 2 = 99
Number of red stickers
= 1 p
= 99
(b)
Number of more yellow stickers than green stickers
= 3 u - 1 u
= 2 u
= 2 x 13
= 26
Answer(s): (a) 99; (b) 26