In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
option
(a) 1 hour
(b) 2 hours
(c) 3 hours
(d) 4 hours

• (v-200)(t+1/2)=vt=600
  v=600/t
  (600/t-200)(t+1/2)=600
  t=1
• 13 years agoHelpfull: Yes(6) No(0)
• ans:1hr
• 13 years agoHelpfull: Yes(2) No(1)
• Ans: (a)
  Let the flight duration be x.
  thus we get the equation as follows:
  (600/x) - (600/(x+0.5))= 200 [since distance/time=speed]
  on solving for x, we get x=1 hour.
• 13 years agoHelpfull: Yes(1) No(0)