Fill in the blanks in units (Eg 1 u) or unit equations (Eg 1 u + 2).
Charlie, Bryan and Adam have some stickers.
Adam has
79 as many as Charlie.
Bryan has 20 more than Adam.
Let the number of stickers that Charlie has be 9 u.
- Number of stickers that Adam has = _____
- Number of stickers that Bryan has = _____
- Total number of stickers = _____
- Number of stickers that Charlie has more than Bryan = _____
(a)
Let the number of stickers that Charlie has = 9 u
Number of stickers that Adam has = 7 u
(b)
Number of stickers that Bryan has = 7 u + 20
(c)
Total number of stickers
= 9 u + 7 u + 7 u + 20
= 23 u + 20
(d)
Number of stickers that Charlie has more than Bryan
= 9 u - (7 u + 20)
= 9 u - 7 u - 20
= 2 u - 20
Answer(s): (a) 7 u; (b) 7 u + 20; (c) 23 u + 20; (d) 2 u - 20