document.write( "Question 1024929: After a sailboat had been on the water for 4 h, a change in the wind direction reduced the average speed of the boat by 2 mph. The entire distance sailed was 161 mi. The total time spent sailing was 9 h. How far did the sailboat travel in the first 4 h \n" ); document.write( "
Algebra.Com's Answer #640317 by ankor@dixie-net.com(22740)\"\" \"About 
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After a sailboat had been on the water for 4 h, a change in the wind direction reduced the average speed of the boat by 2 mph.
\n" ); document.write( " The entire distance sailed was 161 mi.
\n" ); document.write( " The total time spent sailing was 9 h.
\n" ); document.write( " How far did the sailboat travel in the first 4 h
\n" ); document.write( ":
\n" ); document.write( "let s = the speed of the boat the first 4 hrs
\n" ); document.write( "then
\n" ); document.write( "(s-2) = the speed of the last 5 hrs
\n" ); document.write( ":
\n" ); document.write( "Write a distance equation; dist = time * speed
\n" ); document.write( "4s + 5(s-2) = 161
\n" ); document.write( "4s + 5s - 10 = 161
\n" ); document.write( "9s = 161 + 10
\n" ); document.write( "s = 171/9
\n" ); document.write( "s = 19 mph for the first 4 hrs
\n" ); document.write( "then
\n" ); document.write( "4 * 19 = 76 mi traveled in the first 4 hrs
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this, find the distance traveled in the last 5 hrs
\n" ); document.write( "5(17) = 85 mi
\n" ); document.write( "total dist
\n" ); document.write( "85 + 76 = 161 \n" ); document.write( "
\n" );