If a car runs at 45km hr it reaches its destination late by 10 min but if runs at 60km hr it is late...........

Quantitative Aptitude ( CCS) Time & distance

If a car runs at 45km/hr, it reaches its destination late by 10 min but if runs at 60km/hr it is late by 4min. What is the correct time for the journey?

24min

14min

32min

20min

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Explanation:

Solution:
Distance = diff in time *(S1*S2)/S1-S2
D=[10-4]/60hr * (45*60)/[60-45] = 6/60 * 45*60/15 ==>18km
time T=D/S(take any one of the speed) 18/45 =2/5hrs = 2/5*60=24min
then correct time is 24-10=14mins.