document.write( "Question 873773: A car travels d1 kilometers at s1 kilometers per hour. Then, it travels d2 kilometers at s2 kilometers per hour. Finally, it travels d3 kilometers at s3 kilometers per hour. Write a formula for the average rate of speed, s, over the entire trip. \n" ); document.write( "
Algebra.Com's Answer #527136 by ankor@dixie-net.com(22740)\"\" \"About 
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A car travels d1 kilometers at s1 kilometers per hour.
\n" ); document.write( " Then, it travels d2 kilometers at s2 kilometers per hour.
\n" ); document.write( " Finally, it travels d3 kilometers at s3 kilometers per hour.
\n" ); document.write( " Write a formula for the average rate of speed, s, over the entire trip.
\n" ); document.write( ":
\n" ); document.write( "Write a time equation
\n" ); document.write( "\"%28d1%29%2F%28s1%29\" + \"%28d2%29%2F%28s2%29\" + \"%28d3%29%2F%28s3%29\" = \"%28d1%2Bd2%2Bd3%29%2Fs\"
\n" ); document.write( ":
\n" ); document.write( "s(\"%28d1%29%2F%28s1%29\" + \"%28d2%29%2F%28s2%29\" + \"%28d3%29%2F%28s3%29\") = d1+d2+d3
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\n" ); document.write( "s = \"%28d1%2Bd2%2Bd3%29%2F%28%28d1%29%2F%28s1%29%2B%28d2%29%2F%28s2%29%2B%28d3%29%2F%28s3%29%29\"
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