1.

A person complete his journey in 10 hours by car. For the first half of the distance he drives at the speed of 5 kmh"1 and for the second half he drives at speed of .15 kmh"1. What is the total distan

Answer»

75 km



Suppose DISTANCE is x km
T1 = x/2/5 and t2 = x/2/15
Given that t1 + t2 = 10
∴ x/10 + x/30 = 10= 3x + x/30 = 10



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