Fill in the blanks in units or unit equations. (Eg 3 u OR 1 u + 2)
A box contains some stickers in three colors.
40% of the stickers are red.
There are 15
less blue stickers than red stickers.
The remaining stickers are green.
- Number of red stickers = _____
- Number of blue stickers = _____
- Number of blue stickers and red stickers = _____
- Number of green stickers = _____
(a)
Change percentage into units.
40% =
40100 =
25Number of red stickers = 2 u
(b)
There are 15 less blue stickers than red stickers.
Number of blue stickers = 2 u - 15
(c)
Number of blue stickers and red stickers
= 2 u + 2 u - 15
= 4 u - 15
(d)
Number of green stickers
= 5 u - (4 u - 15)
= 5 u - 4 u + 15
= 1 u + 15
Answer(s): (a) 2 u; (b) 2 u - 15; (c) 4 u - 15; (d) 1 u + 15