Japheth saved $11 each day and Gabby saved $
t more than Japheth each day. After 6 weeks, they were still short of $32 to buy a mobile phone.
- How much did the mobile phone cost? Express your answer in terms of t.
- If t = $15, how much did the mobile phone cost?
(a)
Amount Japheth saved per day = $11
Amount Gabby saved per day = $(11 +
t)
Total amount both saved per day
= 11 + 11 +
t = $(22 +
t)
Number of days in 6 weeks
= 6 x 7
= 42
Total both saved in 6 weeks
= 42(22 +
t)
= 42 x 22 + 42 x
t = $(924 + 42
t)
Cost of the mobile phone
= 924 + 42
t + 32
= 924 + 32 + 42
t= $(956 + 42
t)
(b)
If
t = $15,
Cost of the mobile phone
= 956 + 42 x 15
= 956 + 630
= $1586
Answer(s): (a) $(956 + 42
t) or $(42
t + 956); (b) $1586
