document.write( "Question 664560: I'm helping my daughter with her algebra and i can not rememeber the formual for this type of problem , can you help me out so i can expalin it to her? thanks Judy in Texas\r
\n" ); document.write( "\n" ); document.write( "if a biker travel 10 miles in 2 hrs, how long will it take him to ride 3.5 hours
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Algebra.Com's Answer #413354 by Alan3354(69443)\"\" \"About 
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if a biker travel 10 miles in 2 hrs, how long will it take him to ride 3.5 hours
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\n" ); document.write( "?? Did you mean 3.5 miles?
\n" ); document.write( "If so,
\n" ); document.write( "10 mi/2 hr = 5 mi/hr
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\n" ); document.write( "d = r*t
\n" ); document.write( "t = d/r = 3.5/5
\n" ); document.write( "t = 0.7 hours or 42 minutes
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\n" ); document.write( "Another approach, using ratios
\n" ); document.write( "10/2 = 3.5/t
\n" ); document.write( "cross multiply
\n" ); document.write( "10t = 7
\n" ); document.write( "t = 0.7 hours
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