document.write( "Question 911283: John runs 16 miles each Sunday, if he doubles his usual speed, he can run the 16 miles in two hours less than his usual time. what is his usual speed? \n" ); document.write( "
Algebra.Com's Answer #552995 by ewatrrr(24785)\"\" \"About 
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r the usual speed
\n" ); document.write( "\"+16%2Fr+-16%2F2r+++=+2hr\"|Multiplying thru by 2r so as all denominators = 1
\n" ); document.write( "32 - 16 = 4r
\n" ); document.write( " 16 = r
\n" ); document.write( "4mph = r, the usual speed
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