Bobby saved $8 each day and Zoe saved $
d more than Bobby each day. After 5 weeks, they were still short of $29 to buy a television set.
- How much did the television set cost? Express your answer in terms of d.
- If d = $3, how much did the television set cost?
(a)
Amount Bobby saved per day = $8
Amount Zoe saved per day = $(8 +
d)
Total amount both saved per day
= 8 + 8 +
d = $(16 +
d)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(16 +
d)
= 35 x 16 + 35 x
d = $(560 + 35
d)
Cost of the television set
= 560 + 35
d + 29
= 560 + 29 + 35
d= $(589 + 35
d)
(b)
If
d = $3,
Cost of the television set
= 589 + 35 x 3
= 589 + 105
= $694
Answer(s): (a) $(589 + 35
d) or $(35
d + 589); (b) $694
