Rael saved $10 each day and Natalie saved $
m more than Rael each day. After 4 weeks, they were still short of $28 to buy a tablet.
- How much did the tablet cost? Express your answer in terms of m.
- If m = $14, how much did the tablet cost?
(a)
Amount Rael saved per day = $10
Amount Natalie saved per day = $(10 +
m)
Total amount both saved per day
= 10 + 10 +
m = $(20 +
m)
Number of days in 4 weeks
= 4 x 7
= 28
Total both saved in 4 weeks
= 28(20 +
m)
= 28 x 20 + 28 x
m = $(560 + 28
m)
Cost of the tablet
= 560 + 28
m + 28
= 560 + 28 + 28
m= $(588 + 28
m)
(b)
If
m = $14,
Cost of the tablet
= 588 + 28 x 14
= 588 + 392
= $980
Answer(s): (a) $(588 + 28
m) or $(28
m + 588); (b) $980
