523  WorkRate
Together, how long? 1

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



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 3 days, and Bob does it in 8 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 9 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 5 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 8 days, and Bob does it in 9 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 8 days, and Bob does it in 9 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 5 days, how long do they take together? (Nearest to the 10th...)



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523    2.5 3 2.2 1.2 2.2 ( 11.1 )   3.2 4.2 4.2 2.2 2.9 ( 16.7 )   [[ 27.8 ]]