One card costs $
q. One pencil costs $(
q + 15). One colouring book costs $5
q.
- Fred bought 3 cards, 3 pencils and 1 colouring book. How much did he spend? Simplify your answer in terms of q.
- If q = 9, how much did Fred spend altogether?
(a)
Cost of 3 cards = 3 x
q = $3
q Cost of 3 pencils = 3 x (
q + 15) = $(3
q + 45)
Cost of 1 colouring book = $5
q Total amount that he spent
= 3
q + 3
q + 45 + 5
q= 3
q + 3
q + 5
q + 45
= $(11
q + 45)
(b)
If
q = 9,
total amount that he spent
= 11
q + 45
= (11 x 9) + 45
= 99 + 45
= $144
Answer(s): (a) $(11
q + 45) or $(45 + 11
q); (b) $144