Fill in the blanks.
Bryan and Adam have 9 stickers.
Bryan and Charlie have 17 stickers.
Charlie has thrice as many as stickers as Adam.
- Number of stickers that Charlie has = _____ u
- 1 u = _____
- Number of stickers that Bryan has = _____
(a)
Change information into units.
Charlie has thrice as many as stickers as Adam.
Number of stickers that Adam has = 1 u
Number of stickers that Charlie has = 3 u
(b)
Bryan + 1 u = 9 --- (1)
Bryan + 3 u = 17 --- (2)
(2) - (1)
3 u - 1 u = 17 - 9
2 u = 8
1 u = 8 ÷ 2 = 4
(c)
Number of stickers that Bryan has
= 9 - 1 u
= 9 - 4
= 5
Answer(s): (a) 3; (b) 4; (c) 5