Ahmad saved $8 each day and Winnie saved $
v more than Ahmad each day. After 2 weeks, they were still short of $32 to buy a laptop.
- How much did the laptop cost? Express your answer in terms of v.
- If v = $4, how much did the laptop cost?
(a)
Amount Ahmad saved per day = $8
Amount Winnie saved per day = $(8 +
v)
Total amount both saved per day
= 8 + 8 +
v = $(16 +
v)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(16 +
v)
= 14 x 16 + 14 x
v = $(224 + 14
v)
Cost of the laptop
= 224 + 14
v + 32
= 224 + 32 + 14
v= $(256 + 14
v)
(b)
If
v = $4,
Cost of the laptop
= 256 + 14 x 4
= 256 + 56
= $312
Answer(s): (a) $(256 + 14
v) or $(14
v + 256); (b) $312
