Math, asked by sachin9715, 8 hours ago

Determine the time taken when the distance is 720 km and the speed is 60km/hr 2.A cyclist covers 990m in 5 minutes. find his speed in km/hr. 3. A man runs at the speed of 10km/hr. how much time will he take to cover 787 metres? 4.Aaron ran 2000 metres in 190 seconds. Find the speed in km per hour.

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Answers

Answered by Itzheartcracer
3

Given :-

(1) Distance = 720 km

Speed = 60 km/h

(2) Distance = 960 m

Time = 5 min

(3) Speed = 10 km/h

Distance = 750

(4) Distance = 500 m

Time = 100 sec

To Find :-

(1) Time

(2) Speed in km/h

(3) Time

(4) Speed in km/h

Solution :-

(1)

Time = Distance/Speed

Time = 720/60

Time = 72/6

Time = 12 hours

(2)

Distance in km = 960/1000 = 96/100 km

Time in hours = 5/60 = 1/12 hours

Now

Speed = Distance/Time

Speed = (96/100)/(1/12)

Speed = 96/100 × 12/1

Speed = 11.52 km/h

(3)

1 km = 1000 m

750 m = 750/1000 = 0.75 km

Time = Distance/Speed

Time = 0.75/10

Time = 75/1000

Time = 0.075 hours

1 hours = 3600 sec

Time (in sec) = 0.075 × 3600

Time (in sec) =  270 sec

(4)

Speed in (m/s) = 500/100

Speed in (m/s) = 5 m/s

Now

5/18 m/s = 1 km/h

18/5 × 5 km/h

18 km/h

Answered by poonamchhonkar007
2

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