Question

. Ravi covers a total distance of 50km. He covers first 30km in 20minutes and the remaining

20km in 50minutes. Find the average speed of Ravi.​

Answer 1

Answer:

case-l

Distance covered by ravi(d1)=(50-30)km

=20km

Time taken to covered this distance(t1)=20min

we know,

speed (S1)= d1/t1

=20/20

=1km/min

case-ll

Distance covered by Ravi(d2)=20km

Time taken (t2)=50 min

we know,

speed(S2)=d2/t2

=20/50

=0.4km/min

again,

Average speed of ravi (S)=S1+S2

=1+0.4.

=1.4km/min