    ‘Sentence 1: Subway and bus fares rose 33 percent, from $  1.50 to $ 2,,on May 4, while tickets on suburban trains rose an  average 25 percent May 1    Sentence 2 Subway and bus fares rose 33 percent , from $  1.5010 $ 2, on May 4, while average 25 percent increases took  effect May 1 on suburban trains