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 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 fligh

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 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 fligh

A). 1 hour

B). 2 hour

C). 3 hour

D). 4 hour


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1 answers

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Answered by on | Votes 0 |

1 hour



600/x - 600/(x + 1/2) = 200

x(2x + 1) = 3 2x2 + x - 3 = 0 

(2x + 3)(x - 1) = 0 

x = 1 hr.

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