418  WorkRate
Together, how long? 1

Name : _________________

 

refresh

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 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 2 days, and Bob does it in 6 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 6 days, and Bob does it in 9 days, how long do they take together? (Nearest to the 10th...)



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



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



If Ann does a job in 3 days, and Bob does it in 6 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 7 days, and Bob does it in 6 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 5 days, and Bob does it in 3 days, how long do they take together? (Nearest to the 10th...)



+(         )

 

(         )+

++[[          ]]++

418    1.3 1.9 1.5 3.6 4.4 ( 12.7 )   2.2 2 3.2 3.7 1.9 ( 13 )   [[ 25.7 ]]