    Sentence I: Forty to 50 years ago ,  ratio was 3 to 1., Kessler said , ‘and 10 IO  years ago; it was 2 fo 1.    Sentence 2: Forty. to 50 irs ago, the  ratio was about 3-to-l "Resse? said .  and 10 years ago’, it was about 2-1-1.