Fill in the blanks.
Bryan and Adam have 11 stickers.
Bryan and Charlie have 15 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 = 11 --- (1)
Bryan + 3 u = 15 --- (2)
(2) - (1)
3 u - 1 u = 15 - 11
2 u = 4
1 u = 4 ÷ 2 = 2
(c)
Number of stickers that Bryan has
= 11 - 1 u
= 11 - 2
= 9
Answer(s): (a) 3; (b) 2; (c) 9