Adam has 900 blue stickers and red stickers.
10% of the stickers are red.
- How many blue stickers are there?
- How many more blue stickers than red stickers?
(a)
10% =
10100 =
110 Total number of stickers = 10 u
Number of red stickers = 1 u
Number of blue stickers = 10 u - 1 u = 9 u
10 u = 900
1 u = 900 ÷ 10 = 90
Number of blue stickers
= 9 u
= 9 x 90
= 810
(b)
Number of more blue stickers than red stickers
= 9 u - 1 u
= 8 u
= 8 x 90
= 720
Answer(s): (a) 810; (b) 720