140  WorkRate
Together, how long? 1

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



If Ann does a job in 9 days, and Bob does it in 7 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 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 3 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...)



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140    3.8 2.2 1.3 2 3.3 ( 12.6 )   3.9 1.3 1.6 2.2 2.1 ( 11.1 )   [[ 23.7 ]]