Zeph saved $9 each day and Zara saved $
y more than Zeph each day. After 2 weeks, they were still short of $32 to buy a computer.
- How much did the computer cost? Express your answer in terms of y.
- If y = $8, how much did the computer cost?
(a)
Amount Zeph saved per day = $9
Amount Zara saved per day = $(9 +
y)
Total amount both saved per day
= 9 + 9 +
y = $(18 +
y)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(18 +
y)
= 14 x 18 + 14 x
y = $(252 + 14
y)
Cost of the computer
= 252 + 14
y + 32
= 252 + 32 + 14
y= $(284 + 14
y)
(b)
If
y = $8,
Cost of the computer
= 284 + 14 x 8
= 284 + 112
= $396
Answer(s): (a) $(284 + 14
y) or $(14
y + 284); (b) $396
