Observe the graph and find how much distance did the car cover during the period 7.30 am to 8 am? and what was the time when the car had covered a distance of 100 km since its start?

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30 km, 8.00 am

20 km, 8.00 am

20 km, 7.30 am

30 km, 7.30 am

answer is C.

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Detailed Solution

We have given a graph which represents the distance covered by a car.
We have to find the distance covered by the car during the period 7.30 am to 8 am and we have to find the time taken by the car to cover a distance of 100 km since it had started.
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Distance covered by the car during the period X am to Y am = Distance at Y am - Distance at X am
Distance covered by the car during the period 7.30 am to 8 am = 120 km - 100 km
= 20 km.
20 km is the distance covered by the car during the period 7.30 am to 8 am.
The time at which a distance of 100 km was covered by the car is 7.30 am.
Therefore, option 3 is correct.

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