Question

a car covers 20 km in first hour and covers 30 km in the last 4 hours. find the average speed.

Answer 1

Answer:

10 km

Explanation:

average speed =total distance covered/total time

= 30+20/4+1

=50/5

10km/hr

Answer 2

Given

• Distance covered by car in ${1}^{st}$ hr = 20 km
• Distance covered by car in 4 hrs = 30 km

→ Total distance covered = 20 + 30 => 50 km

→ Total time taken = 1 + 4 => 5 hr

We know that

Average speed = $\frac{ Total \: distance }{ Total \: time }$ => $\frac{ 50 }{ 5 }$

Average speed = 10 km / hr