SOLUTION: Albert can mow a lawn in 40 minutes, while his cousin Vinnie can mow the same lawn in one hour. How long would it take to mow the lawn if Albert and Vinnie work together?
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: Albert can mow a lawn in 40 minutes, while his cousin Vinnie can mow the same lawn in one hour. How long would it take to mow the lawn if Albert and Vinnie work together?
Log On
Question 564907: Albert can mow a lawn in 40 minutes, while his cousin Vinnie can mow the same lawn in one hour. How long would it take to mow the lawn if Albert and Vinnie work together? Answer by htmentor(1343) (Show Source):
You can put this solution on YOUR website! Albert's mowing rate = 1 lawn/40 min
Vinnie's mowing rate = 1 lawn/60 min
Working together their rate is
r = 1/40 + 1/60 [lawns/min]
r = 3/120 + 2/120 = 5/120 lawns/min
So the number of minutes per lawn is 120/5 = 24 mins.
