Question

A travels a disctance of 24 km with a speed of 4 km/hr. Ba start 1 hour late than A and he covered the sme disatance in 4 hours. Draw a graph of their journey and find when and whereB will meet A​

Answer 1

Step-by-step explanation:

Formula for average speed is = total distance/total time

now, let the distance be = x (for each side)

then total distance = x+x = 2x

we know that ,distance = speed * time

then, time = distance/speed

time taken to travel first distance = x/24

time taken to come back = x/36

total time = x/24 + x/36

now put this figures in the formula of average speed and we will get = 2x / (x/24 + x/36)

solve the equation by taking L.C.M

and we will get average speed which is

28.8km/hr