Fill in the blanks.
Adam and Bryan have 15 stickers.
Adam and Charlie have 21 stickers.
Charlie has four times as many as stickers as Bryan.
- Number of stickers that Charlie has = _____ u
- 1 u = _____
- Number of stickers that Adam has = _____
(a)
Change information into units.
Charlie has four times as many as stickers as Bryan.
Number of stickers that Bryan has = 1 u
Number of stickers that Charlie has = 4 u
(b)
Adam + 1 u = 15 --- (1)
Adam + 4 u = 21 --- (2)
(2) - (1)
4 u - 1 u = 21 - 15
3 u = 6
1 u = 6 ÷ 3 = 2
(c)
Number of stickers that Adam has
= 15 - 1 u
= 15 - 2
= 13
Answer(s): (a) 4; (b) 2; (c) 13