139  WorkRate
Together, how long? 1

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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 7 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 4 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 6 days, how long do they take together? (Nearest to the 10th...)



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



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139    4.1 3.7 1.3 2.2 2.7 ( 14 )   4.2 2.2 2.2 3.2 3.7 ( 15.5 )   [[ 29.5 ]]