Eric saved $10 each day and Emma saved $
h more than Eric each day. After 5 weeks, they were still short of $29 to buy a projector.
- How much did the projector cost? Express your answer in terms of h.
- If h = $7, how much did the projector cost?
(a)
Amount Eric saved per day = $10
Amount Emma saved per day = $(10 +
h)
Total amount both saved per day
= 10 + 10 +
h = $(20 +
h)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(20 +
h)
= 35 x 20 + 35 x
h = $(700 + 35
h)
Cost of the projector
= 700 + 35
h + 29
= 700 + 29 + 35
h= $(729 + 35
h)
(b)
If
h = $7,
Cost of the projector
= 729 + 35 x 7
= 729 + 245
= $974
Answer(s): (a) $(729 + 35
h) or $(35
h + 729); (b) $974
