Question

the speed of a train is 121/2 km/hr. how much distance the train will travel in 21/2 hours. and 45/2 min.​

Answer 1

Answer:

71.16666666

Step-by-step explanation:

Here is your answer.

Speed of the train = 60 * 0.5 =30 km/h.

The time is 10 * 0.5 = 2 hrs. + 45*0.5 = 22.5 minutes.

0.5 minutes = 0.5 * 60 = 30 seconds.

The total time will be 2 hrs 22 min 30 sec.

So, the total distance traveled will be

Distance = Speed * Time.

For 2 hrs:— 30*2 = 60 km

For 22 minutes:— 30* 22/60hrs = 11 km

For 2 seconds:— 30 * 2/3600 = 0.1666 km.

Adding all these we get,

60+11+0.16666 = 71.166666 km.

Hope it helps you.........

Answer 2

Answer:

speed of train =121/2km/hr=121×5/2×18m/s

time =21/2hr45/2min=21/2×60+45/2=1251/2

distance =speed ×time

distance =(121×5/2×18)×1251/2

distance=10511.875m

=10.511875km