Fill in the blanks.
Charlie and Adam have 18 stickers.
Charlie and Bryan have 28 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 = 18 --- (1)
Charlie + 3 u = 28 --- (2)
(2) - (1)
3 u - 1 u = 28 - 18
2 u = 10
1 u = 10 ÷ 2 = 5
(c)
Number of stickers that Charlie has
= 18 - 1 u
= 18 - 5
= 13
Answer(s): (a) 3; (b) 5; (c) 13