Verified answer

Explanation:-

Given:-

Speed in covering 10km = 15km/hr

Speed in covering 16km = 12km/hr

To find:-

Average speed for the whole jounrey

Solution:-

Time taken to cover 10km = 10/15 hr

Time taken to cover 16km = 16/12 hr

Total time taken

= 10/15 + 16/12

= 2/3 + 4/3

= 2hr

Now,

Average speed

= Total distance / Total time

= (10 + 16)/2

= 5 + 8

= 13km/hr

Final answer:- The average speed for the whole energy is 13km/hr.

Answer; :

Given:-

speed in covering 10 km = 15km/hr

speed in covering 16 km = 16km/ hr

we have to find :-

Average speed for the whole journey.

solution :-

Time taken to cover 10 km = 10/ 15 hr

Time taken to cover 16 km =16/ 12 hr

total time taken is

= 10/15 + 16/12

= 2/3 + 4/3

= 21 hr

Now ; the Average speed is :-

Total distance / total time

= ( 10 + 16 ) /2

= 5+ 8

= 13km/ hr

so; the answer is ,

13km/ hr

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