Question

A Car covers a distance of 20km in 4 hour and next
30 km in 6 hours.
calculate its average speed​

Answer 1

Answer:

Thus the average speed is 5 km per hour.

Explanation:

Total distance =20+30 is 50km . Total time =4+6 is 10 hrs .Thus average speed is 50/10 is 5 km/ hr

Answer 2

${\huge{\underline{\underline{\bold{\red{Solution}}}}}}</p><p></p><p></p><p>$

Given that :

Time taken by car to cover 20 km = 4hrs

Time taken by car to cover next 30 km = 6hrs

Step by Step explanation :

${\large{\boxed{\it{\blue{Average\:speed = \frac{Total\:distance(metres)}{Total\:time\:taken(seconds)}}}}}}$

${\it{average \: speed \: = \frac{20km \: + 30km}{4hrs \: + \: 6hrs} }} \\ ={\it {\frac{50km}{10hrs} }} \\ = {\it{\frac{50 \times 1000}{10 \times 60 \times 60} }} \\ = {\it{ \frac{\cancel{50000m}}{\cancel{36000}s} }} \\ = {\boxed{\it{ \frac{25m}{18s} }}}$

Average speed = 25m/18s