Lessons

General Aptitude
19.2 Time and Distance - Data Sufficiency 1

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Q.

Two cars pass each other in opposite direction. How long would they take to be 500 km apart?

I. 

The sum of their speeds is 135 km/hr.

 II. 

The difference of their speed is 25 km/hr.

View Answer

Correct choice: A

Explanation:

I gives, relative speed = 135 km/hr.

∴ Time taken = 500 hrs.
135

II does not give the relative speed.

∴ I alone gives the answer and II is irrelevant.

∴ Correct answer is (A).

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