Data Sufficiency (DS) | Re: If a car travelled for two hours, what was it's average speed for it's

Its obvious that A and B arent right. Coz the 2 statements along leave question open about the remaining 0.5hr
This deficiency eliminates option A and B

Let's consider the two statements together:
From Statement (1), we know that the car traveled for 1.5 hours at an average speed of 50 mph. So, the distance traveled in the first 1.5 hours is:

Distance = Speed × Time = 50 mph × 1.5 hours = 75 miles

From Statement (2), we know that the car traveled for another 1.5 hours at an average speed of 45 mph. So, the distance traveled in the last 1.5 hours is:

Distance = Speed × Time = 45 mph × 1.5 hours = 67.5 miles

We know that, Average speed = Total distance traveled / Total time taken = 142.5 miles / 3 hours = 47.5 mph

Let me know if u have any doubts open

Statistics : Posted by ramlk • on 13 Jul 2023, 07:58 • Replies 1 • Views 104

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