cts - the distance between p and q be 4 kms and the distance between u and v be 5 kms if a car c1 travels from p and q at a speed of s1 and another car c2 travels between u and v at a speed of s2 now what should be the minimum speed of c2 so that it reaches in - skillgun

Time = distance/speed.Assume T1 be the time taken by C1 to reach its destination and let T2 be that of C2.
T1 = 4/S1 and T2 = 5/S2
For T2 to be lesser than that of T1. 5/S2 < 4/S1 OR s2 > (5/4)S1
Hence speed of car C2 should be at least or greater than 5/4th of speed of car C1.