Question 40652
12/(9+X)+12/(9-x)=3 OR 12(9-X)+12(9-X)/(9+X)(9-X)=3 OR (108+12X+108-12X)/(9-X)(9+X)=3 OR 216/(9-X)(9+X)=3 OR 2168=3(81-X~2) OR 216=243-3X~2 OR -27=-3X~2 OR
X~2=9 OR X=3 THEREFORE THE CURRENT IS 3 MPH 

PROOF 12/(9-3)+12/(9+3)=3 OR 12/6+12/12=3 OR 2+1=3 OR 3=3