Fill in the blanks.
Adam has five times as many stickers as Bryan.
Adam gave 12 to Bryan.
In the end, Adam has four times as many stickers as Bryan.

1. Difference in the number of stickers between Adam and Bryan at first = _____ u
2. Difference in the number of stickers between Adam and Bryan in the end = _____ u
3. Difference in the number of stickers Adam has at first and in the end = _____ u
4. Difference in the number of stickers Bryan has at first and in the end = _____ u

	Adam	Bryan	Total
Before	5 x 5 = 25 u	1 x 5 = 5 u	6 x 5 = 30 u
Change	- 12	+ 12
After	4 x 6 = 24 u	1 x 6 = 6 u	5 x 6 = 30 u

(a)
Change X times into units.

There is an internal transfer of 12 stickers from Adam to Bryan.

The total remains unchanged.
LCM of 6 and 5 is 30.

Number of stickers that Adam gives to Bryan
= 25 u - 24 u
= 1 u

Difference in the number of stickers between Adam and Bryan at first
= 25 u - 5 u
= 20 u

(b)
Difference in the number of stickers between Adam and Bryan in the end
= 24 u - 6 u
= 18 u

(c)
Difference in the number of stickers that Adam has at first and in the end
= 25 u - 24 u
= 1 u

(d)
Difference in the number of stickers that Bryan has at first and in the end
= 6 u - 5 u
= 1 u

Answer(s): (a) 20; (b) 18; (c) 1; (d) 1