Lee saved $8 each day and Jane saved $
t more than Lee each day. After 5 weeks, they were still short of $29 to buy a hi-fi system.
- How much did the hi-fi system cost? Express your answer in terms of t.
- If t = $16, how much did the hi-fi system cost?
(a)
Amount Lee saved per day = $8
Amount Jane saved per day = $(8 +
t)
Total amount both saved per day
= 8 + 8 +
t = $(16 +
t)
Number of days in 5 weeks
= 5 x 7
= 35
Total both saved in 5 weeks
= 35(16 +
t)
= 35 x 16 + 35 x
t = $(560 + 35
t)
Cost of the hi-fi system
= 560 + 35
t + 29
= 560 + 29 + 35
t= $(589 + 35
t)
(b)
If
t = $16,
Cost of the hi-fi system
= 589 + 35 x 16
= 589 + 560
= $1149
Answer(s): (a) $(589 + 35
t) or $(35
t + 589); (b) $1149
