108  WorkRate
Together, how long? 2

Name : _________________

  

refresh

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 7 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 2 days, how long do they take together? (Nearest to the 10th...)



If Ann does a job in 8 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 2 days, how long do they take together? (Nearest to the 10th...)

If Ann does a job in 2 days, and Bob does it in 4 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...)



어떤일을 영철이 혼자 하면 9일 걸리고, 나혼자 하면 3일 걸리는데, 같이 일하면 며칠이 걸리는가? (소수점 이하 한자리...)



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

+(         )

 

(         )+

++[[          ]]++
108    4.4 3.9 1.6 3.1 1.6 ( 14.6 )   1.3 2.2 2.2 3.6 2.2 ( 11.5 )   [[ 26.1 ]]