Fill in the blanks.
Adam and Charlie have 25 stickers.
Adam and Bryan have 40 stickers.
Bryan has four times as many as stickers as Charlie.
- Number of stickers that Bryan has = _____ u
- 1 u = _____
- Number of stickers that Adam has = _____
(a)
Change information into units.
Bryan has four times as many as stickers as Charlie.
Number of stickers that Charlie has = 1 u
Number of stickers that Bryan has = 4 u
(b)
Adam + 1 u = 25 --- (1)
Adam + 4 u = 40 --- (2)
(2) - (1)
4 u - 1 u = 40 - 25
3 u = 15
1 u = 15 ÷ 3 = 5
(c)
Number of stickers that Adam has
= 25 - 1 u
= 25 - 5
= 20
Answer(s): (a) 4; (b) 5; (c) 20