Zeph saved $12 each day and Shannon saved $
x more than Zeph each day. After 4 weeks, they were still short of $30 to buy a printer.
- How much did the printer cost? Express your answer in terms of x.
- If x = $17, how much did the printer cost?
(a)
Amount Zeph saved per day = $12
Amount Shannon saved per day = $(12 +
x)
Total amount both saved per day
= 12 + 12 +
x = $(24 +
x)
Number of days in 4 weeks
= 4 x 7
= 28
Total both saved in 4 weeks
= 28(24 +
x)
= 28 x 24 + 28 x
x = $(672 + 28
x)
Cost of the printer
= 672 + 28
x + 30
= 672 + 30 + 28
x= $(702 + 28
x)
(b)
If
x = $17,
Cost of the printer
= 702 + 28 x 17
= 702 + 476
= $1178
Answer(s): (a) $(702 + 28
x) or $(28
x + 702); (b) $1178
