590  WorkRate
Together, how long? 1

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If Ann does a job in 6 days, and Bob does it in 6 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...)



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



If Ann does a job in 8 days, and Bob does it in 5 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 9 days, and Bob does it in 6 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 5 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 2 days, how long do they take together? (Nearest to the 10th...)



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 9 days, and Bob does it in 5 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 3 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...)



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590    3 3.7 4.4 3.1 3.6 ( 17.8 )   2.9 1.6 1.6 3.2 2.1 ( 11.4 )   [[ 29.2 ]]