TRAIN A, TRAVELING 70 MPH, LEAVES WESTFORD HEADING TOWARD EASTFORD 260 MILES AWAY. AT THE SAME TIME TRAIN B TRAVELING 60 MPH, LEAVES EASTFORD HEADING TOWARD WESTFORD. WHEN DO THE TWO TRAIN MEET? HOW FAR FROM EACH CITY DO THEY MEET? SHOW OR EXPLAIN HOW YOU GOT YOUR ANSWER.