Glen saved $9 each day and Fiona saved $
g more than Glen each day. After 3 weeks, they were still short of $31 to buy a television set.
- How much did the television set cost? Express your answer in terms of g.
- If g = $12, how much did the television set cost?
(a)
Amount Glen saved per day = $9
Amount Fiona saved per day = $(9 +
g)
Total amount both saved per day
= 9 + 9 +
g = $(18 +
g)
Number of days in 3 weeks
= 3 x 7
= 21
Total both saved in 3 weeks
= 21(18 +
g)
= 21 x 18 + 21 x
g = $(378 + 21
g)
Cost of the television set
= 378 + 21
g + 31
= 378 + 31 + 21
g= $(409 + 21
g)
(b)
If
g = $12,
Cost of the television set
= 409 + 21 x 12
= 409 + 252
= $661
Answer(s): (a) $(409 + 21
g) or $(21
g + 409); (b) $661
