One card costs $
d. One stapler costs $(
d + 15). One story book costs $5
d.
- Tim bought 5 cards, 3 staplers and 1 story book. How much did he spend? Simplify your answer in terms of d.
- If d = 3, how much did Tim spend altogether?
(a)
Cost of 5 cards = 5 x
d = $5
d Cost of 3 staplers = 3 x (
d + 15) = $(3
d + 45)
Cost of 1 story book = $5
d Total amount that he spent
= 5
d + 3
d + 45 + 5
d= 5
d + 3
d + 5
d + 45
= $(13
d + 45)
(b)
If
d = 3,
total amount that he spent
= 13
d + 45
= (13 x 3) + 45
= 39 + 45
= $84
Answer(s): (a) $(13
d + 45) or $(45 + 13
d); (b) $84