<PRE><B>Question 849592</B>
This is a ratio problem. 
     Step 1: Set up a proportion 
              # of gallons over # of miles = # of gallons over # of miles
                    8.5 / 250 = x / 400
     Step 2: Cross multiply
               8.5(400) = 250(x)
                    3400 = 250x
      Step 3: Solve for x
                3400 / 250 = 250x / 250
                     13.6 = x or x = 13.6
x is the number of gallons it would take for Jeremy to drive 400 miles</PRE>