Question

7. A train runs from station A to station B in
1.5 hours, covering a distance of 50 kms,
then from station B to station C in 1.5
hours, covering a distance of 60 kms and
then from station C to station Din 1.5 hours,
covering a distance of 70 kms. What is the
average speed of the train from A to D?
1) 65 km/hour 2) 50 km/hour
3) 40 km/hour
4) 35 km/hour
5) 60 km/hour​

Answer 1

Answer:

(5) 60km/hr

Step-by-step explanation:

Given,

A train runs from station A to station B in  1.5 hours, covering a distance of 50 kms, then from station B to station C in 1.5  hours, covering a distance of 60 kms and  then from station C to station Din 1.5 hours, covering a distance of 70 kms.

here,we observe the time intervals are same

if the time intervals are same average speed will be total distance/number of intervals

the average speed will be 50+60+70/3=60 km/hr

Answer 2

Answer:

3) 40

Step-by-step explanation:

train running from a to b 1.5 hrs , b to c 1.5 hrs , c to d 1.5 hours , total time taken 4.5 hours ,

so taking average 50+60+70 = 180

dividing with the time 4.5 hrs we get 50+60+70/4.5

=180/4.5 = 40 this us a tancet repeated question