Cole saved $12 each day and Raeann saved $
n more than Cole each day. After 2 weeks, they were still short of $29 to buy a stereo system.
- How much did the stereo system cost? Express your answer in terms of n.
- If n = $6, how much did the stereo system cost?
(a)
Amount Cole saved per day = $12
Amount Raeann saved per day = $(12 +
n)
Total amount both saved per day
= 12 + 12 +
n = $(24 +
n)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(24 +
n)
= 14 x 24 + 14 x
n = $(336 + 14
n)
Cost of the stereo system
= 336 + 14
n + 29
= 336 + 29 + 14
n= $(365 + 14
n)
(b)
If
n = $6,
Cost of the stereo system
= 365 + 14 x 6
= 365 + 84
= $449
Answer(s): (a) $(365 + 14
n) or $(14
n + 365); (b) $449
