One sticker costs $
j. One pencil costs $(
j + 15). One story book costs $5
j.
- Tom bought 5 stickers, 3 pencils and 1 story book. How much did he spend? Simplify your answer in terms of j.
- If j = 14, how much did Tom spend altogether?
(a)
Cost of 5 stickers = 5 x
j = $5
j Cost of 3 pencils = 3 x (
j + 15) = $(3
j + 45)
Cost of 1 story book = $5
j Total amount that he spent
= 5
j + 3
j + 45 + 5
j= 5
j + 3
j + 5
j + 45
= $(13
j + 45)
(b)
If
j = 14,
total amount that he spent
= 13
j + 45
= (13 x 14) + 45
= 182 + 45
= $227
Answer(s): (a) $(13
j + 45) or $(45 + 13
j); (b) $227