Warren saved $9 each day and Ivory saved $
q more than Warren each day. After 2 weeks, they were still short of $31 to buy a projector.
- How much did the projector cost? Express your answer in terms of q.
- If q = $15, how much did the projector cost?
(a)
Amount Warren saved per day = $9
Amount Ivory saved per day = $(9 +
q)
Total amount both saved per day
= 9 + 9 +
q = $(18 +
q)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(18 +
q)
= 14 x 18 + 14 x
q = $(252 + 14
q)
Cost of the projector
= 252 + 14
q + 31
= 252 + 31 + 14
q= $(283 + 14
q)
(b)
If
q = $15,
Cost of the projector
= 283 + 14 x 15
= 283 + 210
= $493
Answer(s): (a) $(283 + 14
q) or $(14
q + 283); (b) $493
