<PRE><B>Question 110994</B>
THE DIFFERENCE IN SPEEDS IS 55-40=15 MPH
THE DIFFERENCE IN THE MILEAGE IS 1.
AT 15 MPH IT TAKES 1/15 HOUR TO COVER 1 MILE.
1/15 HOUR=X/60 MINUTES
1/15=X/60
15X=60
X=60/15
X=4 MINUTES FOR CAR A TO CATCH CAR B.
40(4/60)=160/60=16/6=8/3=2.667 MILES
55(4/60)=220/60=11/3=3.667 MILES 
SO IN 4 SECONDS THE FASTER CAR COVERS 3.667 WHILE THE SLOWER CAR COVERS 2.667 MILES. </PRE>