One marble costs $
h. One pencil costs $(
h + 15). One guide book costs $4
h.
- Vincent bought 7 marbles, 3 pencils and 1 guide book. How much did he spend? Simplify your answer in terms of h.
- If h = 10, how much did Vincent spend altogether?
(a)
Cost of 7 marbles = 7 x
h = $7
h Cost of 3 pencils = 3 x (
h + 15) = $(3
h + 45)
Cost of 1 guide book = $4
h Total amount that he spent
= 7
h + 3
h + 45 + 4
h= 7
h + 3
h + 4
h + 45
= $(14
h + 45)
(b)
If
h = 10,
total amount that he spent
= 14
h + 45
= (14 x 10) + 45
= 140 + 45
= $185
Answer(s): (a) $(14
h + 45) or $(45 + 14
h); (b) $185