Xavier saved $11 each day and Sabrina saved $
s more than Xavier each day. After 6 weeks, they were still short of $31 to buy a computer.
- How much did the computer cost? Express your answer in terms of s.
- If s = $11, how much did the computer cost?
(a)
Amount Xavier saved per day = $11
Amount Sabrina saved per day = $(11 +
s)
Total amount both saved per day
= 11 + 11 +
s = $(22 +
s)
Number of days in 6 weeks
= 6 x 7
= 42
Total both saved in 6 weeks
= 42(22 +
s)
= 42 x 22 + 42 x
s = $(924 + 42
s)
Cost of the computer
= 924 + 42
s + 31
= 924 + 31 + 42
s= $(955 + 42
s)
(b)
If
s = $11,
Cost of the computer
= 955 + 42 x 11
= 955 + 462
= $1417
Answer(s): (a) $(955 + 42
s) or $(42
s + 955); (b) $1417
