Luke saved $10 each day and Erika saved $
e more than Luke each day. After 5 weeks, they were still short of $30 to buy a tablet.
- How much did the tablet cost? Express your answer in terms of e.
- If e = $13, how much did the tablet cost?
(a)
Amount Luke saved per day = $10
Amount Erika saved per day = $(10 +
e)
Total amount both saved per day
= 10 + 10 +
e = $(20 +
e)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(20 +
e)
= 35 x 20 + 35 x
e = $(700 + 35
e)
Cost of the tablet
= 700 + 35
e + 30
= 700 + 30 + 35
e= $(730 + 35
e)
(b)
If
e = $13,
Cost of the tablet
= 730 + 35 x 13
= 730 + 455
= $1185
Answer(s): (a) $(730 + 35
e) or $(35
e + 730); (b) $1185
