document.write( "Question 375192: A ship must average 22 knots to make it's 10hr run on schedule. During the first 4 hrs bad weather caused it to reduce speed to 16 knots, what should it's average speed be for the rest of the trip to maintain its schedule? \n" ); document.write( "
Algebra.Com's Answer #266828 by mananth(16946)\"\" \"About 
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Average for the trip = 22 knots/h
\n" ); document.write( "time = 10 hours
\n" ); document.write( "distance = 10*22=220 miles.
\n" ); document.write( "...
\n" ); document.write( "First 4 hours
\n" ); document.write( "rate = 16 knots/h
\n" ); document.write( "distance = 64 miles.
\n" ); document.write( "..
\n" ); document.write( "distance to cover in balance 6 hours = 220-64
\n" ); document.write( "=156 miles
\n" ); document.write( "..
\n" ); document.write( "time = 6 hours
\n" ); document.write( "..
\n" ); document.write( "rate = d/t
\n" ); document.write( "rate = 156/6
\n" ); document.write( "rate = 26 knots/h
\n" ); document.write( "This should be the speed to be on time.
\n" ); document.write( "...
\n" ); document.write( "m.ananth@hotmail.ca
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