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

Charlie, Bryan and Adam have some beads.
After Charlie's number of beads is doubled,
Bryan's number of beads is increased by 14 and
Adam's number of beads is reduced by 4,
the ratio of the number of stickers of Charlie to Bryan to Adam becomes 10 : 3 : 3.

Let the number of stickers that Adam has in the end be 3 u.

1. Number of beads that Charlie has at first = _____
2. Number of beads that Bryan has at first = _____
3. Number of beads that Adam has at first = _____
4. Total number of beads that they have at first = _____

	Charlie	Bryan	Adam
Before	5 u	3 u - 14	3 u + 4
Change	x 2	+ 14	- 4
After	10 u	3 u	3 u

(a)
Change information into units.

Number of beads that Charlie has at first
= 10 u ÷ 2
= 5 u

(b)
Number of beads that Bryan has at first = 3 u - 14

(c)
Number of beads that Adam has at first = 3 u + 4

(d)
Total number of beads that they have at first
= 5 u + 3 u - 14 + 3 u + 4
= 5 u + 3 u + 3 u - 14 + 4 
= 11 u - 10

Answer(s): (a) 5 u; (b) 3 u - 14; (c) 3 u + 4; (d) 11 u - 10