Fill in the blanks.
Bryan has thrice as many stickers as Adam.
Bryan gave 5 to Adam.
In the end, Bryan has twice as many stickers as Adam.

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

	Bryan	Adam	Total
Before	3 x 3 = 9 u	1 x 3 = 3 u	4 x 3 = 12 u
Change	- 5	+ 5
After	2 x 4 = 8 u	1 x 4 = 4 u	3 x 4 = 12 u

(a)
Change X times into units.

There is an internal transfer of 5 stickers from Bryan to Adam.

The total remains unchanged.
LCM of 4 and 3 is 12.

Number of stickers that Bryan gives to Adam
= 9 u - 8 u
= 1 u

Difference in the number of stickers between Bryan and Adam at first
= 9 u - 3 u
= 6 u

(b)
Difference in the number of stickers between Bryan and Adam in the end
= 8 u - 4 u
= 4 u

(c)
Difference in the number of stickers that Bryan has at first and in the end
= 9 u - 8 u
= 1 u

(d)
Difference in the number of stickers that Adam has at first and in the end
= 4 u - 3 u
= 1 u

Answer(s): (a) 6; (b) 4; (c) 1; (d) 1