document.write( "Question 860931: Erin starts riding her bike. She is travelling at 10km/h. An hour after Erin starts, her sister, Makayla starts riding her bike. She is travelling at 16km/h. After how long (time) will Makayla catch up to her sister? \n" ); document.write( "
Algebra.Com's Answer #518717 by mananth(16946)\"\" \"About 
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let the time taken by Erin when her sister meets her be t\r
\n" ); document.write( "\n" ); document.write( "Makayla will take t-1\r
\n" ); document.write( "\n" ); document.write( "distans traveled by both is same
\n" ); document.write( "d=rt\r
\n" ); document.write( "\n" ); document.write( "12t = 16(t-1)\r
\n" ); document.write( "\n" ); document.write( "12t=16t-16\r
\n" ); document.write( "\n" ); document.write( "4t=16
\n" ); document.write( "t=4\r
\n" ); document.write( "\n" ); document.write( "catchup time = 4 hours\r
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