676  WorkRate
Together, how long? 1

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If Ann does a job in 7 days, and Bob does it in 7 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 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 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 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 8 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 5 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



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



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676    3.5 4 1.3 2.8 3 ( 14.6 )   4.4 2.3 1.9 2.5 2.5 ( 13.6 )   [[ 28.2 ]]