Fill in the blanks in numbers, units or unit equations.
Bryan and Adam have some stickers.
When Bryan gives 5 to Adam,
the number of stickers he has left is 3 times as many as that of Adam's.
Let the number of stickers that Adam has in the end be 1 u.

1. Number of stickers that Bryan has in the end = _____
2. Number of stickers that Bryan has at first = _____
3. Number of stickers that Adam has at first = _____
4. If Bryan has 80 stickers more than Adam at first, find 1 u.

	Bryan	Adam
Before	3 u + 5	1 u - 5
Change	- 5	+ 5
After	3 u	1 u

(a)
Change X times into units.

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

(b)
Number of stickers that Bryan has at first = 3 u + 5

(c)
Number of stickers that Adam has at first = 1 u - 5

(d)
If the number of stickers that Bryan has at first is 80 more than Adam,
when we add 80 stickers to what Adam has at first,
the number of stickers that both of them have at first will be the same.

3 u + 5 = 1 u - 5 + 80
3 u + 5 = 1 u + 75
3 u - 1 u = 75 - 5
2 u = 70

1 u = 70 ÷ 2 = 35

Answer(s):(a) 3 u; (b) 3 u + 5; (c) 1 u - 5; (d) 35