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

Bryan and Adam have some stickers.
When Adam uses ¹₁₀ of his stickers and
Bryan buys another 50 stickers,
they have the same number of stickers each.
Let the number of stickers that Adam has in the end be 9 u.

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

	Adam	Bryan
Before	10 u	9 u - 50
Change	- 1 u	+ 50
After	9 u	9 u
Comparing between Adam and Bryan	1 x 9 = 9 u	1 x 9 = 9 u

(a)
Change equal stage into units.

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

LCM of 9 and 1 = 9

Number of stickers that Bryan has in the end = 9 u

(b)
Number of stickers that Adam has at first = 10 u

(c)
Number of stickers that Bryan has at first = 9 u - 50

(d)
Total number of stickers that they have at first
= 10 u + (9 u - 50)
= 10 u + 9 u - 50
= 19 u - 50

Answer(s): (a) 9 u; (b) 10 u; (c) 9 u - 50; (d) 19 u - 50