Two friends plan to walk along a 36-km trail, starting at opposite ends of the trail at the same time. If Friend P's rate is 25% faster than Friend Q's, how many kilometers will Friend P have walked when they pass each other? Choices:	A) 19	B) 20	C) 21	D) 22	E) 23
If Q complete x kilometers, then P completes 1.25x kilometers.   x + 1.25x = 36   2.25x=36   x = 16   Then P will have have walked   1.25*16= 
<gadget id="calculator">  1.25*16</gadget>
<output>20</output>
20 km.   The answer is 20.
<result>B</result>
Two friends plan to walk along a 36-km trail, starting at opposite ends of the trail at the same time. If Friend P's rate is 25% faster than Friend Q's, how many kilometers will Friend P have walked when they pass each other?