150  WorkRate
Together, how long? 1

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



If Ann does a job in 7 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 4 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 9 days, how long do they take together? (Nearest to the 10th...)



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



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150    4.7 1.6 2 2.5 3.2 ( 14 )   3.3 3.2 3.2 4.2 2.3 ( 16.2 )   [[ 30.2 ]]