Riordan saved $12 each day and Gem saved $
w more than Riordan each day. After 2 weeks, they were still short of $29 to buy a printer.
- How much did the printer cost? Express your answer in terms of w.
- If w = $3, how much did the printer cost?
(a)
Amount Riordan saved per day = $12
Amount Gem saved per day = $(12 +
w)
Total amount both saved per day
= 12 + 12 +
w = $(24 +
w)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(24 +
w)
= 14 x 24 + 14 x
w = $(336 + 14
w)
Cost of the printer
= 336 + 14
w + 29
= 336 + 29 + 14
w= $(365 + 14
w)
(b)
If
w = $3,
Cost of the printer
= 365 + 14 x 3
= 365 + 42
= $407
Answer(s): (a) $(365 + 14
w) or $(14
w + 365); (b) $407
