Brain Teasers

[Jangar]

Let's see if I can figure it out...

6 hours at 2 000 mph = 12 000 miles the reurn trip also 12 000 miles was at a speed of 1 000 mph must have taken 12 hours so total flying time is 18 hours, distance was 24 000 miles. thus avergare speed is 24 000 miles / 18 hours which gives me 1 333 mph.

Will check the answer after I get back from supper.

This formular also works for the:

Will walked three miles in one hour. He had to slow down to two miles per hour. He returns at two miles per hour.

What was his average speed?

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