Lui saved $8 each day and Linda saved $
m more than Lui each day. After 4 weeks, they were still short of $32 to buy a computer.
- How much did the computer cost? Express your answer in terms of m.
- If m = $17, how much did the computer cost?
(a)
Amount Lui saved per day = $8
Amount Linda saved per day = $(8 +
m)
Total amount both saved per day
= 8 + 8 +
m = $(16 +
m)
Number of days in 4 weeks
= 4 x 7
= 28
Total both saved in 4 weeks
= 28(16 +
m)
= 28 x 16 + 28 x
m = $(448 + 28
m)
Cost of the computer
= 448 + 28
m + 32
= 448 + 32 + 28
m= $(480 + 28
m)
(b)
If
m = $17,
Cost of the computer
= 480 + 28 x 17
= 480 + 476
= $956
Answer(s): (a) $(480 + 28
m) or $(28
m + 480); (b) $956
