Henry saved $12 each day and Kimberly saved $
h more than Henry each day. After 3 weeks, they were still short of $28 to buy a hard drive.
- How much did the hard drive cost? Express your answer in terms of h.
- If h = $14, how much did the hard drive cost?
(a)
Amount Henry saved per day = $12
Amount Kimberly saved per day = $(12 +
h)
Total amount both saved per day
= 12 + 12 +
h = $(24 +
h)
Number of days in 3 weeks
= 3 x 7
= 21
Total both saved in 3 weeks
= 21(24 +
h)
= 21 x 24 + 21 x
h = $(504 + 21
h)
Cost of the hard drive
= 504 + 21
h + 28
= 504 + 28 + 21
h= $(532 + 21
h)
(b)
If
h = $14,
Cost of the hard drive
= 532 + 21 x 14
= 532 + 294
= $826
Answer(s): (a) $(532 + 21
h) or $(21
h + 532); (b) $826