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Mary is 18 years older than Jerry. 3 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
Mary is 18 years older than Jerry. 4 years ago, Mary was 7 times as old as Jerry then. How old is Mary? |
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| 911 9 8 5 8 7 ( 37 ) 7 9 9 12 10 ( 47 ) [[ 84 ]] | ||
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