One sticker costs $
b. One pencil costs $(
b + 15). One colouring book costs $4
b.
- Zeph bought 4 stickers, 3 pencils and 1 colouring book. How much did he spend? Simplify your answer in terms of b.
- If b = 16, how much did Zeph spend altogether?
(a)
Cost of 4 stickers = 4 x
b = $4
b Cost of 3 pencils = 3 x (
b + 15) = $(3
b + 45)
Cost of 1 colouring book = $4
b Total amount that he spent
= 4
b + 3
b + 45 + 4
b= 4
b + 3
b + 4
b + 45
= $(11
b + 45)
(b)
If
b = 16,
total amount that he spent
= 11
b + 45
= (11 x 16) + 45
= 176 + 45
= $221
Answer(s): (a) $(11
b + 45) or $(45 + 11
b); (b) $221