A complex statement - about an aeroplane comming late. "The boy says if it was 6hours later, the waiting time would be 1/5th of the time if the plane had come 2 hoursearlier instead. the plane is supposed to come at midnightAns 11.00 a.m

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virajk

  • Jul 6th, 2010
 

Let them arrive at x pm

Plane arrives on time : Wait time = 12-x;

Plane arrives 6 hrs late : Wait time = 12+6-x = 18-x;

Plane arrives 2 hrs early : Wait Time = 12-2-x = 10-x;

1/5(18-x) = (10-x)

18-x = 50 -5x;

4x = 32;

x =8;

Proof:
2hrs early :10-8 =2= 1/5(18-8) :6 hrs late

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