315  WorkRate
Together, how long? 1

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



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



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



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



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



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



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



If Ann does a job in 5 days, and Bob does it in 6 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...)



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315    2.3 2 3.8 3.3 2.3 ( 13.7 )   2.4 3.2 4.4 2.7 2.2 ( 14.9 )   [[ 28.6 ]]