Question

A train covers the first 50 km in 30 minutes and 20 km in 10 minutes what is the average speed

Answer 1

Answer

29.2

Step-by-step explanation:

average speed= total distance travelled/total time taken

total distance=50+20

                      =70km

                      =70,000m

total time taken=30+10

                         =40min

                         =2,400 sec

.: average speed= 70,000/2,400

                            =29.166..........

                            =29.2m/s

Answer 2

$\bold\red{\underline{Given:}}$

$\bold\green{\underline{In\:the\:1st\:state}}$

Distance covered by a train=50km

Time taken by a train=30m

$\bold\green{\underline{In\:the\:2nd\:state}}$

Distance covered by the train=20km

Time taken by the train=10m

$\bold\orange{\underline{Find- \:average\: speed}}$

$\bold\green{\underline{A.T.Q}}$

Total distance=50+20=70km

Total time=30+10=40m

Now, covert the distance and time

So,

Distance=70*1000=>70000m

Time=40*60=>2400 second

• by using formula , here

$\bold\purple{\boxed{Average\: speed=>\frac{Total\: distance}{Total\:time}}}$

$= \frac{70000}{2400} \\ \\ = \frac{700}{24} \\ \\ = 29.16$

Hence,

• The average speed of train is29.16m/s