document.write( "Question 119288: Mr. Santos travelled for 2 hours at a constant speed. Because of potholes, he reduced his speed by 7km per hour for the next 2 hours. if he travelled 206 km, what was his speed on the first part of the trip. \n" ); document.write( "
Algebra.Com's Answer #87403 by ankor@dixie-net.com(22740)\"\" \"About 
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Traveled for 2 hours at a constant speed. he reduced his speed by 7 km per hour for the next 2 hours. if he traveled 206 km, what was his speed on the first part of the trip.
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\n" ); document.write( "Let s = speed for the 1st part of the trip
\n" ); document.write( "Then
\n" ); document.write( "(s-7) = speed for the 2nd part of the trip
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\n" ); document.write( "Write a distance equation: Dist = time * speed
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\n" ); document.write( "Fast dist + slow dist = 206 km
\n" ); document.write( "2s + 2(s-7) = 206
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\n" ); document.write( "2s + 2s - 14 = 206
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\n" ); document.write( "4s = 206 + 14
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\n" ); document.write( "4s = 220
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\n" ); document.write( "s = \"220%2F4\"
\n" ); document.write( "s = 55 km/hr, speed on the 1st part of the trip
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\n" ); document.write( "Check solution of s = 55
\n" ); document.write( "2(55) + 2(48) =
\n" ); document.write( "110 + 96 = 206; confirms our answer \n" ); document.write( "
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