document.write( "Question 535312: Sina has an appointment at 11:15 40 km from her home. She averaged 60km/h for the trip and arrived 15 minutes late for the appointment.
\n" ); document.write( "How long will it take to be on time if she left at 10:40?
\n" ); document.write( "What is the average speed if she left at 10:40?
\n" ); document.write( "

Algebra.Com's Answer #351855 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Sina went 40 km at 60 km/hr
\n" ); document.write( "\"+40+=+60%2At+\"
\n" ); document.write( "\"+t+=+2%2F3+\" hr
\n" ); document.write( "She was 15 min late for 11:15 appointment,
\n" ); document.write( "so she arrived at 11:30
\n" ); document.write( "If she left at 10:40, it will take her 35 minutes
\n" ); document.write( "to get there at 11:15
\n" ); document.write( "Let \"s\" be her average speed
\n" ); document.write( "\"+40+=+s%2A%2835%2F60%29+\"
\n" ); document.write( "\"+35s+=+40%2A60+\"
\n" ); document.write( "\"+35s+=+2400+\"
\n" ); document.write( "\"+s+=+68.57+\" km/hr average speed
\n" ); document.write( "
\n" );