Fill in the blanks.
Bryan and Charlie have 19 stickers.
Bryan and Adam have 31 stickers.
Adam has four times as many as stickers as Charlie.
- Number of stickers that Adam has = _____ u
- 1 u = _____
- Number of stickers that Bryan has = _____
(a)
Change information into units.
Adam has four times as many as stickers as Charlie.
Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 4 u
(b)
Bryan + 1 u = 19 --- (1)
Bryan + 4 u = 31 --- (2)
(2) - (1)
4 u - 1 u = 31 - 19
3 u = 12
1 u = 12 ÷ 3 = 4
(c)
Number of stickers that Bryan has
= 19 - 1 u
= 19 - 4
= 15
Answer(s): (a) 4; (b) 4; (c) 15