One bead costs $
q. One pencil costs $(
q + 15). One story book costs $3
q.
- Charlie bought 3 beads, 3 pencils and 1 story book. How much did he spend? Simplify your answer in terms of q.
- If q = 5, how much did Charlie spend altogether?
(a)
Cost of 3 beads = 3 x
q = $3
q Cost of 3 pencils = 3 x (
q + 15) = $(3
q + 45)
Cost of 1 story book = $3
q Total amount that he spent
= 3
q + 3
q + 45 + 3
q= 3
q + 3
q + 3
q + 45
= $(9
q + 45)
(b)
If
q = 5,
total amount that he spent
= 9
q + 45
= (9 x 5) + 45
= 45 + 45
= $90
Answer(s): (a) $(9
q + 45) or $(45 + 9
q); (b) $90