document.write( "Question 1083155: A student must leave for campus in 10 minutes or he will be late for class.​ Unfortunately, he is snowed in. He can shovel the driveway in 20 ​minutes, and his brother claims to be able to do it in 12 minutes. If they shovel​ together, how long will it take to clear the​ driveway? Will this give enough time for the student to get to the​ campus? \n" ); document.write( "
Algebra.Com's Answer #697164 by josgarithmetic(39618)\"\" \"About 
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\"1%2F20%2B1%2F12=3%2F60%2B5%2F60=8%2F60\", as if 8 driveways cleared in 60 minutes; or \"4%2F3\" driveways-worth cleared in 10 minutes.\r
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\n" ); document.write( "\n" ); document.write( "The student will be late. He needs 10 minutes to travel for being on-time to campus. Time t, to clear the driveway by student and his brother combined will be \"%288%2F60%29%2At=1\"
\n" ); document.write( "\"t=60%2F8\"
\n" ); document.write( "\"t=15%2F2\"
\n" ); document.write( "\"t=7%261%2F2\"------seven and a half minutes;
\n" ); document.write( "which leaves the student only 2.5 minutes of travel time before he will no longer be to campus on-time.
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