Question

a train has a speed of 60 km per hour for first one hour and 40 kilometre per hour the next hour its average speed in kilometre is​

Answer 1

Answer:

50km/h

Step-by-step explanation:

Speed in first hour =60 km

Speed in another hour =40km

Avg.speed = total distance / total time

=60+40/2

= 100/2

= 50 km /h

Answer 2

SOLUTION -;

Given -:

• 60 k.m.p.h is first hour
• 40 km in second half hour

For Find -;

• average speed

Required answer -;

• 53.33

Let's begin -:

Speed in first hour = 60 km / h

speed in next 1/2 h is 40 km / h

total time =

$1\ + \frac{1}{2} = \frac{3}{2} hour$

Average speed is

$\frac{80 \times 2}{3} \\ = \frac{160}{3} = 53.33$

so finial answer is 53.33