Question

a train travels a distance of 15km with a speed of 30 km/h and remaining distance of 15 km with a speed of 45 km/h.Find its average speed in km/h.

Answer 1

Answer:

Find an answer to your question A train travels the first 15 ... A train travels the first 15 km at a uniform speed of 30 km/h; ... Total distance = 15km+75km+10km = 100km

Answer 2

Answer:

$\huge\underline\orange{Question}$

A train travels the first 15 km at a uniform speed of 30km/h; the next 75km at a uniform speed of 50krn/h; and the last 10km at a uniform speed of 20km/h. Calculate the average speed for the entire train journey.

$\huge\underline\purple{☞Answer}$

Given,

Given,d

Given,d 1

Given,d 1

Given,d 1 =15km,v

Given,d 1 =15km,v 1

Given,d 1 =15km,v 1

Given,d 1 =15km,v 1 =30km/h

Given,d 1 =15km,v 1 =30km/hd

Given,d 1 =15km,v 1 =30km/hd 2

Given,d 1 =15km,v 1 =30km/hd 2

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/h

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/h

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/hwe know that,

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/hwe know that, average speed =total distance covered/total time taken

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/hwe know that, average speed =total distance covered/total time taken total distance covered =D=15+75+10=100km

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/hwe know that, average speed =total distance covered/total time taken total distance covered =D=15+75+10=100km total time taken =T=(15/30)+(75/50)+(10/20)=2.5hours

Given,d 1 =15km,v 1 =30km/hd 2 =75km,v 2 =50km/hd 3 =10km,v 3 =20km/hwe know that, average speed =total distance covered/total time taken total distance covered =D=15+75+10=100km total time taken =T=(15/30)+(75/50)+(10/20)=2.5hoursso, average speed =100/2.5=40km/h