Flight A usually takes 1 hour more than Flight B to travel a distance of 7200 km. Due to engine trouble speed of flight B falls by a factor of 1/6th, so it takes 36 minutes more than Flight A to complete the same journey? What is the speed of Flight A (in km/hr)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 800
Let the time taken by B = x
......(i)
ATQ,
......(ii)
From eqn (i) & (ii)
x = 8
Speed of A = 
= 800 km/hr.