Math, asked by Hiba20, 9 months ago

Q2. Zara travelled in a train moving at an average speed of 120km/h and covered a distance of 40km towards East.

i. Calculate the time taken by the train to cover this distance.

ii. She further travelled for 3hours at a speed of 120km/h towards North. Calculate the distance she covered in this time.

iii. Zia was driving his truck on the super highway. His speed was recorded by the motorway camera between 6:00am to 8:30am. He covered a distance of 250km during this time. Calculate his average speed between this time duration.

Answers

Answered by missonlysmiles

Answer:

(ii) 360 km

(iii) 100 kmph

Step-by-step explanation:

(i) speed =distance/time

time=distance/speed

time=40/120 hours

=1/3 hours

=20min=120s

(ii) distance=speed×time

=120×3=360 km

(iii)speed =distance/time

here, time =2.5 hours

speed=250/2.5

=100kmph

Answered by orangesquirrel

Given:

(I) Average speed= 120 km/hour

Distance= 40 km

(II) Time= 3 hours

Speed= 120 km/hour

(III) Time of travel= 6:00am to 8:30am.

Distance= 250km

To find:

(I) Time taken to cover the distance

(II) Distance covered in that time

(III) Average speed during that time duration

Solution:

(I) As we know,

Speed = Distance/Time

So, Time = Distance/Speed

So, Time = 40/120 = 1/3 hours or 20 minutes

So the time taken is 1/3 hours or 20 minutes

(II) As Distance= Speed* Time =( 120*3)km= 360 km

So the distance covered is 360km

(III) As Average speed= Total distance/Total time

So total time is 2.5 hours

Average speed = 250/2.5 = 100 km/hour

So the average speed is 100 km/hour.

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