document.write( "Question 983023: she biked for 48, 49, and 65 miles on the first three days. How many miles does she need to bike on the last day so that her average is 54 miles per day \n" ); document.write( "
Algebra.Com's Answer #603822 by macston(5194)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "To average 54 miles over 4 days, her total mileage must be:
\n" ); document.write( "4(54 miles)=216 miles
\n" ); document.write( "After 3 days her total is:
\n" ); document.write( "48mi+49mi+65mi=162 miles
\n" ); document.write( "On the fourth day, her mileage must be:
\n" ); document.write( "216mi-162mi=54 miles
\n" ); document.write( "
\n" );