document.write( "Question 40843: Let the first biker left the ranger station at 'x' hrs.
\n" ); document.write( "Then by 4 pm he rode for ((4+12) - x) = (16 - x) hrs.
\n" ); document.write( "Distance traveled by him = $\"10%2A%2816+-+x%29\"$ miles.
\n" ); document.write( "The second biker left the ranger station 1 hr after the first biker.
\n" ); document.write( "So he traveled for ((16 - x) - 1) = (15 - x) hrs.
\n" ); document.write( "Distance traveled by him = $\"15%2A%2815+-+x%29\"$ miles.
\n" ); document.write( "As both bikers met at 4 pm so by then they have travelled equal distances.
\n" ); document.write( "So $\"15%2A%2815+-+x%29+=+10%2A%2816+-+x%29\"$
\n" ); document.write( "Solving we get x = 13.
\n" ); document.write( "Thus the first biker left the ranger station at 13 hrs or 1 pm. \n" ); document.write( "

Algebra.Com's Answer #26263 by psbhowmick(878) $\"\"$ $\"About$

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