1. Distance Between Two Drivers

Steve drove from place A to place B at an average speed at 50 km/hr. At the same time, Joseph drove from place B to place A at an average speed at 60 km/hr using the same route. If the distance between A and B were 300 km, what is the distance between Steve and Joseph after 1.5 hrs?

Steve:

rate = 50km/hr

time = x

Distance = 300 km

Joseph:

rate = 60 km/hr

time = x

Distance = 300 km

Is this correct so far? I get confused in terms of the given time of 1.5 hours.

2. Re: Distance Between Two Drivers

Too tired to draw a diagram?

A(Steve)@50...............>1.5hr---------?---------1.5hr<............................@60(Joseph)B

3. Re: Distance Between Two Drivers

I'd look at this as the distance between Steve and Joseph decreasing at a rate of 110 kph. And so with distance between then d in km and time t in hours:

$\displaystyle d=|300-110t|$

4. Re: Distance Between Two Drivers Originally Posted by MarkFL I'd look at this as the distance between Steve and Joseph decreasing at a rate of 110 kph. And so with distance between then d in km and time t in hours:

$\displaystyle d=|300-110t|$
d = [300 - 110t]

Let t = 1.5

Doing so, I get 135 miles between the two drivers.