Fill in the blanks.
Charlie and Adam have 29 stickers.
Charlie and Bryan have 49 stickers.
Bryan has thrice as many as stickers as Adam.
- Number of stickers that Bryan has = _____ u
- 1 u = _____
- Number of stickers that Charlie has = _____
(a)
Change information into units.
Bryan has thrice as many as stickers as Adam.
Number of stickers that Adam has = 1 u
Number of stickers that Bryan has = 3 u
(b)
Charlie + 1 u = 29 --- (1)
Charlie + 3 u = 49 --- (2)
(2) - (1)
3 u - 1 u = 49 - 29
2 u = 20
1 u = 20 ÷ 2 = 10
(c)
Number of stickers that Charlie has
= 29 - 1 u
= 29 - 10
= 19
Answer(s): (a) 3; (b) 10; (c) 19