Fill in the blanks.
Adam and Charlie have 28 stickers.
Adam and Bryan have 40 stickers.
Bryan has thrice as many as stickers as Charlie.
- Number of stickers that Bryan has = _____ u
- 1 u = _____
- Number of stickers that Adam has = _____
(a)
Change information into units.
Bryan has thrice as many as stickers as Charlie.
Number of stickers that Charlie has = 1 u
Number of stickers that Bryan has = 3 u
(b)
Adam + 1 u = 28 --- (1)
Adam + 3 u = 40 --- (2)
(2) - (1)
3 u - 1 u = 40 - 28
2 u = 12
1 u = 12 ÷ 2 = 6
(c)
Number of stickers that Adam has
= 28 - 1 u
= 28 - 6
= 22
Answer(s): (a) 3; (b) 6; (c) 22