Ivan saved $9 each day and Linda saved $
e more than Ivan 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 e.
- If e = $4, how much did the stereo system cost?
(a)
Amount Ivan saved per day = $9
Amount Linda saved per day = $(9 +
e)
Total amount both saved per day
= 9 + 9 +
e = $(18 +
e)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(18 +
e)
= 14 x 18 + 14 x
e = $(252 + 14
e)
Cost of the stereo system
= 252 + 14
e + 29
= 252 + 29 + 14
e= $(281 + 14
e)
(b)
If
e = $4,
Cost of the stereo system
= 281 + 14 x 4
= 281 + 56
= $337
Answer(s): (a) $(281 + 14
e) or $(14
e + 281); (b) $337
