Asked by Michael

It takes you 3 hours to mow a lawn & it takes your sister 2 hours to mow the same lawn. How long does it take the two of you to mow 12 lawns if you work together? Whats the answer? Helpppp
Answered by Michael
Can someone help me. Thankyou.
Answered by Ms. Sue
You'll find many explanations about solving this type of problem in the Related Questions below.
Answered by farah
I don't get how to finish solving with the 12 lawns? I get its 6/5. hrs.
Answered by Ms. Sue
Maybe Michael knows.

Answered by Michael
I'm still confused. I don't get it. Sorry Farah.
Answered by Henry
T1*T2/(T1+T2) = 3*2/(3+2) = 1.2 h/Lawn.

T = 1.2h/Lawn * 12Lawns = 14.4 Hours

Note: 1.2h = 6/5 h = Time to do 1 Lawn.