Eric saved $12 each day and Esther saved $
b more than Eric each day. After 2 weeks, they were still short of $32 to buy a projector.
- How much did the projector cost? Express your answer in terms of b.
- If b = $3, how much did the projector cost?
(a)
Amount Eric saved per day = $12
Amount Esther saved per day = $(12 +
b)
Total amount both saved per day
= 12 + 12 +
b = $(24 +
b)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(24 +
b)
= 14 x 24 + 14 x
b = $(336 + 14
b)
Cost of the projector
= 336 + 14
b + 32
= 336 + 32 + 14
b= $(368 + 14
b)
(b)
If
b = $3,
Cost of the projector
= 368 + 14 x 3
= 368 + 42
= $410
Answer(s): (a) $(368 + 14
b) or $(14
b + 368); (b) $410
