657  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 8 days, and Bob does it in 8 days, how long do they take together? (Nearest to the 10th...)



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



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



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



If Ann does a job in 5 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 7 days, how long do they take together? (Nearest to the 10th...)



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657    3 4 2.9 2.8 3.8 ( 16.5 )   4.1 1.4 1.7 2.2 3.7 ( 13.1 )   [[ 29.6 ]]