SOLUTION: It takes richard semmler 3 hours to prepare a little league baseball field. it takes larry gilligan 10 hours to prepare the same field. how long will it take richard and larry work

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Question 851486: It takes richard semmler 3 hours to prepare a little league baseball field. it takes larry gilligan 10 hours to prepare the same field. how long will it take richard and larry working together to prepare a little league baseball field?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/3+1/10=1/x
10/30+3/30=1/x
13/30=1/x
30/13=x
2.3079=x