Question

two buses leave a bus station and travel in opposite directions from that same starting point. if the speed of one is twice the speed of the other and they are 240 km apart at the end of one hour, what is the speed of each bus?

Answer 1

Answer:

v1=80km/h.       V2=160km/h

Explanation:

let the initial speed of first bus be v1 and the initial speed of second bus be v2.

v2=2*v1

after 1 hour they are 240 km apart.

let the first bus be x km from starting point and second bus = 240-x km from starting point.

using speed=dist./time

v1=x/1            v2=>2*v1=(240-x)/1

adding the above equations

3*v1=240

v1=80 km/hr    v2=160km/hr