Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have some stickers.
29 of the stickers Adam has is 20 less than
89 of what Bryan has.
Let
89 of Bryan's stickers be 8 u.
- Number of stickers that Bryan has = ___________
- Number of stickers that Adam has = ___________
- Total number of stickers = ___________
- Difference in the number of stickers between Adam and Bryan = ___________
(a)
Change fraction into units.
89 of Bryan's stickers → 8 u
19 of Bryan's stickers → 1 u
99 of Bryan's stickers → 9 u
Number of Bryan's stickers = 9 u
(b)
29 of Adam's stickers → 8 u - 20
19 of Adam's stickers → (8 u - 20) ÷ 2 = 4 u - 10
99 of Adam's stickers → 9 x (4 u - 10) = 36 u - 90
Number of Adam's stickers = 36 u - 90
(c)
Total number of stickers
= 9 u + 36 u - 90
= 45 u - 90
(d)
Difference in the number of stickers between Adam and Bryan
= (36 u - 90) - 9 u
= 36 u - 9 u - 90
= 27 u - 90
Answer(s): (a) 9 u; (b) 36 u - 90; (c) 45 u - 90; (d) 27 u - 90