Two bullets are fired at an interval of 15 minutes but a car approaching the place of firing hears t...........

Quantitative Aptitude ( CCS) Time & distance

Two bullets are fired at an interval of 15 minutes but a car approaching the place of firing hears the second bullet after 14 minutes. Speed of sound is 330 meters per second. Find the speed of the car?

80km/hr

82km/hr

85km/hr

90km/hr

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Explanation:

distance travels by sound in one minute is equal to the distance travels by car in 14 minutes i.e. 60*330 = s*14*60
s = (330/14)*(18/5) = 85km/hr (approx.)