306  WorkRate
Together, how long? 1

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



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



If Ann does a job in 8 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 7 days, and Bob does it in 6 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 9 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...)



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



If Ann does a job in 8 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 4 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



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



If Ann does a job in 7 days, and Bob does it in 8 days, how long do they take together? (Nearest to the 10th...)



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306    1.5 2.8 2.2 3.2 3.9 ( 13.6 )   2.5 2.2 1.7 2.2 3.7 ( 12.3 )   [[ 25.9 ]]