a truck covered 30 km at a uniform speed of 30km/hr what you should be its speed from the next 90km if the average speed from the entire journey is 60 km/h ? of class 9th
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Answered by
4
Answer:
Total distance covered= (30 + 90)km = 120km
Time required to cover 30 km at 30km/hr
= ( 30/ 30)hr = 1 hr
Average speed of the entire journey= 60km/hr
Total time required for the journey= (120/ 60)hr = 2 hrs
Therefore,time required for the next 90 km= (2-1) hr = 1 hr
Therefore speed of the truck for the next 90km= (90/ 1) km/ hr = 90 km/hr
Explanation:
kindly don't report..
Answered by
1
Answer:
Total distance = (30 + 90)km = 120km
Time required to cover 30 km at 30km/h = ( 30/ 30)h = 1 h
Average speed of the entire journey = 60km/h
Total time required for the journey = (120/ 60)h = 2 h
Therefore, time required for the next 90 km = (2-1) h = 1 h
Hence, speed of the truck for the next 90km = (90/ 1) km/ h = 90 km/h
Explanation:
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