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3 years ago

15

It takes a groundskeeper 40 minutes to prepare a little league baseball field for a game. it takes his assistant 50 minutes to p

repare the same field. how long will it take if they work together to prepare the field

1 answer:

Elena L [17]3 years ago

7 0

1/40+1/50=1/n
5/200+4/200=1/n
9/200=1/n
9n=200
n=200/9 minutes for both of them to prepare the field
☺☺☺☺

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