Cole saved $9 each day and Esther saved $
t more than Cole each day. After 2 weeks, they were still short of $29 to buy a projector.
- How much did the projector cost? Express your answer in terms of t.
- If t = $5, how much did the projector cost?
(a)
Amount Cole saved per day = $9
Amount Esther saved per day = $(9 +
t)
Total amount both saved per day
= 9 + 9 +
t = $(18 +
t)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(18 +
t)
= 14 x 18 + 14 x
t = $(252 + 14
t)
Cost of the projector
= 252 + 14
t + 29
= 252 + 29 + 14
t= $(281 + 14
t)
(b)
If
t = $5,
Cost of the projector
= 281 + 14 x 5
= 281 + 70
= $351
Answer(s): (a) $(281 + 14
t) or $(14
t + 281); (b) $351
