Lee saved $10 each day and Fanny saved $
q more than Lee each day. After 2 weeks, they were still short of $28 to buy a tablet.
- How much did the tablet cost? Express your answer in terms of q.
- If q = $5, how much did the tablet cost?
(a)
Amount Lee saved per day = $10
Amount Fanny saved per day = $(10 +
q)
Total amount both saved per day
= 10 + 10 +
q = $(20 +
q)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(20 +
q)
= 14 x 20 + 14 x
q = $(280 + 14
q)
Cost of the tablet
= 280 + 14
q + 28
= 280 + 28 + 14
q= $(308 + 14
q)
(b)
If
q = $5,
Cost of the tablet
= 308 + 14 x 5
= 308 + 70
= $378
Answer(s): (a) $(308 + 14
q) or $(14
q + 308); (b) $378
