Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have some stickers.
25 of the stickers Adam has is 18 less than
45 of what Bryan has.
Let
45 of Bryan's stickers be 4 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.
45 of Bryan's stickers → 4 u
15 of Bryan's stickers → 1 u
55 of Bryan's stickers → 5 u
Number of Bryan's stickers = 5 u
(b)
25 of Adam's stickers → 4 u - 18
15 of Adam's stickers → (4 u - 18) ÷ 2 = 2 u - 9
55 of Adam's stickers → 5 x (2 u - 9) = 10 u - 45
Number of Adam's stickers = 10 u - 45
(c)
Total number of stickers
= 5 u + 10 u - 45
= 15 u - 45
(d)
Difference in the number of stickers between Adam and Bryan
= (10 u - 45) - 5 u
= 10 u - 5 u - 45
= 5 u - 45
Answer(s): (a) 5 u; (b) 10 u - 45; (c) 15 u - 45; (d) 5 u - 45