Question

a person travelled with a speed of 50 kilometre per hour for 1 hour and with 20 kilometre per hour for next two hours find the average speed for whole journey​

Answer 1

Answer:

30 km per hour

Explanation:

Speed = Distance/time

avg speed= sum of distances covered / total hours taken

= 50+20+20/1+2

= 90/3

=30km/hr

Hope this helps you...... and this is not english!