<PRE><B>Question 1202573</B>
At noon the hot air balloon headed north at 8 miles per hour. Three hours later, the glider header south from the same location at 16 miles per hour. At what time will the hot air balloon be 168 miles from the glider?


ballon speed 8mph

Glider speed 16 mph

ballon moves 24 miles in 3 hours  3 PM

At 3 PM glider crosses balloon 

opposite direction

Effective distancing speed = 24 mph  (16+8)


Distance  apart =168 miles

Time = D/S = (168-24)/24 = 6 hours

They take 6 hours to be 168 miles apart from 3 PM

At 9 PM they are 168 miles apart


Thanks to tutor Math therapy. 



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