is the individual time for object A, 
is the individual time for object B and 
is the time for A and B working together.
It takes an experienced groundskeeper 390 minutes to
mow a large picnic area. A new groundskee...
Mathematics, 08.04.2020 21:02 shongmadi77
It takes an experienced groundskeeper 390 minutes to
mow a large picnic area. A new groundskeeper takes
525 minutes to mow the same area. If they work
together to mow the picnic area, how long will it take
them?
Answers: 2
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