Can you solve this puzzle question. Giving explanation's as you go.
Carmel borrow's a car from Khaled. He say's that she can borrow it for 5 hour's but must not exceed 50 mph.
Let M be th number of mile's driven and form an inequality for m and solve it.
2006-11-01 21:46:24 · 7 answers · asked by helen y 1 in Science & Mathematics ➔ Mathematics
Rate x Time = Distance
50 mph x 5 hr < or = m
250 < or = m
Carmel might have driven fewer miles since the fastest speed that could be driven was 50 mph.
2006-11-01 22:02:47 · answer #1 · answered by Laurie V 4 · 0⤊ 0⤋
The car can be borrowed for a maximum of 5 hours, and the maximum speed is 50mph. So carmel can not travel further than 5 x 50 = 250miles
or M<=250
(where <= is the 'less than or equal to' sign)
2006-11-01 21:54:33 · answer #2 · answered by robcraine 4 · 1⤊ 0⤋
Let the speed be s and the time for which the car is driven be t
From the conditions,
s < 50 mph(1)
t = 5 hrs(2)
No of miles driven, M = st (3)
From statements 1, 2 and 3,
M < 250 miles
(note I have not used the equal to sign :) )
2006-11-01 21:50:49 · answer #3 · answered by Nick 1 · 2⤊ 0⤋
anywhere between 250 and 0 miles trailed, roads are windy and top speed of 50 MPH won't be a constant speed. however may be more than 250 because Carmel may go faster than 50 MPH.
naturally I would fail a science paper question here, although over simplifying would be the true error.
2006-11-01 21:56:40 · answer #4 · answered by wartorious 3 · 0⤊ 0⤋
The first two answers are correct but the inequality should always be 'less than', not 'less than or equals' as the vehicle starts from rest and therefor can never average the full 50mph.
2006-11-01 22:04:10 · answer #5 · answered by Clive 6 · 2⤊ 0⤋
no i cant solve it !! never could do maths at school !
2006-11-01 21:56:34 · answer #6 · answered by Charlotte J 4 · 0⤊ 1⤋
The furthest away she can go is 125 miles, assuming a constant speed. Dunno what you're on about though.
2006-11-01 21:57:22 · answer #7 · answered by Anonymous · 0⤊ 2⤋