Question

car travels a certain distance with a speed of 60km/h in 15 min and then the remaining distance at a speed of 90 km/h in the next 15 min. Calculate the total distance covered by the car. ​

Answer 1

Answer:

Let the total distance travelled be x km Then total time taken =

10

x/3

+

20

x/3

+

60

x/3

=

30

x

+

60

x

+

180

x

=

180

6x+3x+x

=

180

10x

=

18

x

hrs Then average speed = =

Totaltimetaken

Totaldistancetravelled

=

x/18

x

km/hr = 18 km/hr