<PRE><B>Question 523791</B>
It took cindy 2 hours to bike from abbott to benson at a constant speed. the return trip took only 1.5 hours because she increased her speed by 6 km/h. how far apart are abbott and benson? 
------
A to B DATA:
time = 2 hrs ; rate = r kmh ; distance = r*t = 2r km
----
B to A DATA:
time = 1.5 hrs; r+6 kmh ; distance = r*t = 1.5(r+6) km
----------------
Equation:
distance = distance 
2r = 1.5(r+6)
2r = 1.5r + 9
0.5r = 9
r = 18 kmh
-----------
Distance from A to B = 2r = 2*18 = 36 km
================
=======================================
cheers,
Stan H.</PRE>