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?

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.
RELATED QUESTIONS
Mowing a lawn. Adam can mow a lawn in 40 minutes, while his cousin Victor can mow the... (answered by richwmiller)

Albert can mow a lawn in 40 minutes, while Vinnie can mow the same lawn in one hour. How... (answered by richwmiller)

Peter can mow a lawn in 40 minutes. John can mow the same lawn in 60 minutes. How long... (answered by ikleyn,josgarithmetic,math_tutor2020,greenestamps)

Martha can mow a lawn in 60 minutes. Jose can mow the same lawn in 48 minutes. How long... (answered by nyc_function)

By himself, a person can mow his lawn in 60 minutes. If his daughter helps, (answered by fractalier,Boreal)

Americo can mow a lawn in 20 minutes,while Brandon takes 30 minutes to mow the same lawn. (answered by richwmiller)

Trisha can mow a certain lawn in 40 minutes. Joe can mow the same lawn in 15 minutes. How (answered by josmiceli)

Betty can mow a lawn in 40 minutes. Melissa can mow the same lawn in 20 minutes. How long (answered by Edwin McCravy)

It takes a boy 60 minutes to mow the lawn, but his sister can mow it in 90 minutes. How... (answered by stanbon)