SOLUTION: One grocery clerk can stock a shelf in 20 minutes, whereas a second clerk requires 30 minutes to stock the same shelf. If the two clerks worked together, how long would it take th

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: One grocery clerk can stock a shelf in 20 minutes, whereas a second clerk requires 30 minutes to stock the same shelf. If the two clerks worked together, how long would it take th      Log On


   

Question 56128: One grocery clerk can stock a shelf in 20 minutes, whereas a second clerk requires 30 minutes to stock the same shelf. If the two clerks worked together, how long would it take them to stock the shelf ?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
(20*30)/(20+30)
600/50=12 MINUTES FOR THE 2 CLERKS TO STOCK THE SHELF WORKING TOGETHER.