Jack saved $8 each day and Gem saved $
f more than Jack each day. After 5 weeks, they were still short of $31 to buy a massage chair.
- How much did the massage chair cost? Express your answer in terms of f.
- If f = $16, how much did the massage chair cost?
(a)
Amount Jack saved per day = $8
Amount Gem saved per day = $(8 +
f)
Total amount both saved per day
= 8 + 8 +
f = $(16 +
f)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(16 +
f)
= 35 x 16 + 35 x
f = $(560 + 35
f)
Cost of the massage chair
= 560 + 35
f + 31
= 560 + 31 + 35
f= $(591 + 35
f)
(b)
If
f = $16,
Cost of the massage chair
= 591 + 35 x 16
= 591 + 560
= $1151
Answer(s): (a) $(591 + 35
f) or $(35
f + 591); (b) $1151
