A and b are walking towards each other over a road 120km long . A at the rate of 6 km/hr and b at the rate of 4 km/hr. How soon will they meet
Answers
Answered by
8
Speed of A is given to us as 40 kmph.
Let us assume the speed of B to be 's'.
If we consider the distance PR, it was covered by A in 't' hours and B in 25 hours.
=> PR = 40*t = s*25
If we consider the distance RQ, it was covered by B in 't' hours and A in '16' hours.
=> RQ = s*t = 40*16
Let us divide the two equations. We will get
40t/st = 25s/640
=> 40/s = 5s/128
=> s^2 = 40*128/5 = 8*128 = 1024
=> Speed of B = s = 32 km
Similar questions