One stamp costs $
v. One pencil costs $(
v + 15). One colouring book costs $5
v.
- Julian bought 7 stamps, 3 pencils and 1 colouring book. How much did he spend? Simplify your answer in terms of v.
- If v = 11, how much did Julian spend altogether?
(a)
Cost of 7 stamps = 7 x
v = $7
v Cost of 3 pencils = 3 x (
v + 15) = $(3
v + 45)
Cost of 1 colouring book = $5
v Total amount that he spent
= 7
v + 3
v + 45 + 5
v= 7
v + 3
v + 5
v + 45
= $(15
v + 45)
(b)
If
v = 11,
total amount that he spent
= 15
v + 45
= (15 x 11) + 45
= 165 + 45
= $210
Answer(s): (a) $(15
v + 45) or $(45 + 15
v); (b) $210