ManSab wrote:

Thanks

chetan2u for taking time to respond.

I am still struggling.Let me give it one more try.

Question stem says Bus should have maintained speed of v km/hr and then for 1/3rd of distance it maintained V km/hr and remaining at 1.2v.

Now let's plug in statement-1 V=60.

Bus should have maintained speed of 60 km/hr and then going 1/3rd of distance at 60 km/hr and remaining at 72 km/hr.

Now, I can safely conclude that total distance is 180 km. Total planned duration was 3 hours.

Hi..

In that case you don't require statement I at all.

You already know 1/3 is 1 HR... 1/3 at v and 1/3 at 1.2v

So irrespective of v, as per your method, Ans is 3

But that's not correct.

1/3 of distance does not mean 1/3 of time. You are mixing the two here.

It is given 1/3 of distance at v and then at 1.2v.

Your answer would depend on distance or the difference in time as shown above

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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372

2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html

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