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Mary is 15 years older than Jerry. 7 years ago, Mary was 4 times as old as Jerry then. How old is Mary? |
Mary is 15 years older than Jerry. 4 years ago, Mary was 6 times as old as Jerry then. How old is Mary? |
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| 911 12 10 9 9 13 ( 53 ) 7 12 14 10 10 ( 53 ) [[ 106 ]] | ||
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