plz answer this question ASAP step by step
Attachments:
Answers
Answered by
1
Answer:
24km/hr
Step-by-step explanation:
Let the dist. be x
dist. while going = dist while returning
time = dist./speed
so, time while going = x/20
time while coming =x/30
total time= x/20+x/30
=(3x+2x)/60
=5x/60
=x/12
total dist.= 2x
avg. speed = total dist./total speed
=2x*12/x
=24km/hr
Answered by
0
24km/hr
hope it helps you
Similar questions