Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).

Adam and Bryan have some stickers.
When Bryan uses ⁴₇ of his stickers and
Adam buys another 70 stickers,
they have the same number of stickers each.
Let the number of stickers that Bryan has in the end be 3 u.

1. Number of stickers that Adam has in the end = _____
2. Number of stickers that Bryan has at first = _____
3. Number of stickers that Adam has at first = _____
4. Total number of stickers that they have at first = _____

	Bryan	Adam
Before	7 u	3 u - 70
Change	- 4 u	+ 70
After	3 u	3 u
Comparing between Bryan and Adam	1 x 3 = 3 u	1 x 3 = 3 u

(a)
Change equal stage into units.

The number of stickers that Bryan has in the end is repeated.
Change the ratio into units.

LCM of 3 and 1 = 3

Number of stickers that Adam has in the end = 3 u

(b)
Number of stickers that Bryan has at first = 7 u

(c)
Number of stickers that Adam has at first = 3 u - 70

(d)
Total number of stickers that they have at first
= 7 u + (3 u - 70)
= 7 u + 3 u - 70
= 10 u - 70

Answer(s): (a) 3 u; (b) 7 u; (c) 3 u - 70; (d) 10 u - 70