Peter saved $10 each day and Gwen saved $
b more than Peter each day. After 5 weeks, they were still short of $29 to buy a tablet.
- How much did the tablet cost? Express your answer in terms of b.
- If b = $9, how much did the tablet cost?
(a)
Amount Peter saved per day = $10
Amount Gwen saved per day = $(10 +
b)
Total amount both saved per day
= 10 + 10 +
b = $(20 +
b)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(20 +
b)
= 35 x 20 + 35 x
b = $(700 + 35
b)
Cost of the tablet
= 700 + 35
b + 29
= 700 + 29 + 35
b= $(729 + 35
b)
(b)
If
b = $9,
Cost of the tablet
= 729 + 35 x 9
= 729 + 315
= $1044
Answer(s): (a) $(729 + 35
b) or $(35
b + 729); (b) $1044
