Fill in the blanks.
Charlie and Bryan have 20 stickers.
Charlie and Adam have 40 stickers.
Adam has five times as many as stickers as Bryan.
- Number of stickers that Adam has = _____ u
- 1 u = _____
- Number of stickers that Charlie has = _____
(a)
Change information into units.
Adam has five times as many as stickers as Bryan.
Number of stickers that Bryan has = 1 u
Number of stickers that Adam has = 5 u
(b)
Charlie + 1 u = 20 --- (1)
Charlie + 5 u = 40 --- (2)
(2) - (1)
5 u - 1 u = 40 - 20
4 u = 20
1 u = 20 ÷ 4 = 5
(c)
Number of stickers that Charlie has
= 20 - 1 u
= 20 - 5
= 15
Answer(s): (a) 5; (b) 5; (c) 15