Seth saved $10 each day and Hilda saved $
s more than Seth each day. After 2 weeks, they were still short of $30 to buy a television set.
- How much did the television set cost? Express your answer in terms of s.
- If s = $15, how much did the television set cost?
(a)
Amount Seth saved per day = $10
Amount Hilda saved per day = $(10 +
s)
Total amount both saved per day
= 10 + 10 +
s = $(20 +
s)
Number of days in 2 weeks
= 2 x 7
= 14
Total both saved in 2 weeks
= 14(20 +
s)
= 14 x 20 + 14 x
s = $(280 + 14
s)
Cost of the television set
= 280 + 14
s + 30
= 280 + 30 + 14
s= $(310 + 14
s)
(b)
If
s = $15,
Cost of the television set
= 310 + 14 x 15
= 310 + 210
= $520
Answer(s): (a) $(310 + 14
s) or $(14
s + 310); (b) $520
