877  WorkRate
Together, how long? 1

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If Ann does a job in 9 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 5 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 4 days, and Bob does it in 8 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 2 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 7 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 6 days, and Bob does it in 5 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 5 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 9 days, how long do they take together? (Nearest to the 10th...)



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



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



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877    4.2 3.1 2.7 1.5 3.7 ( 15.2 )   2.7 3.1 3.2 2 1.7 ( 12.7 )   [[ 27.9 ]]