903  WorkRate
Together, how long? 1

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If Ann does a job in 9 days, and Bob does it in 2 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 4 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 9 days, and Bob does it in 9 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 2 days, and Bob does it in 4 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 4 days, and Bob does it in 9 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 6 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 10 days, and Bob does it in 10 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 3 days, and Bob does it in 2 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 5 days, and Bob does it in 4 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 4 days, and Bob does it in 6 days, how long do they take together? (Nearest to the 10th...)



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903    1.6 2.5 4.5 1.3 2.8 ( 12.7 )   2 5 1.2 2.2 2.4 ( 12.8 )   [[ 25.5 ]]