2 friends X & Y walk from A to B at a distance of 39 miles at 3 miles/hr and 3.5 miles/hr respectively. Y reaches B, returns immediately and meets X at ‘C’ . find distance from A to C.	Choose the most appropriate option.
A) 38 km
B) 39 km
C) 35 km
D) 36 km
E) 34 km
Since the time of meeting will be same. Set the equation for time as equal.   ---------------39---------------   A*...................C*...........*B   -----(39-x)-------|----x------   At C,   T(A)=T(B)   ((39-x)/3)=((39+x)/3.5)   Solve for x. and subtract x from 39 to get the answer.   answer is  39-3= 
<gadget id="calculator"> 39-3</gadget>
<output>36</output>
36km.   ANSWER:36 km
<result>D</result>
2 friends X & Y walk from A to B at a distance of 39 miles at 3 miles/hr and 3.5 miles/hr respectively. Y reaches B, returns immediately and meets X at ‘C’ . find distance from A to C.