3 years ago

Manny can complete a sales route in 7 hours. Jane can do the same job in 3hours. How long will it take them to the job together

Mathematics

1 answer:

Butoxors [25]3 years ago

4 0

Answer:

Step-by-step explanation:

1/7x+1/3x=1

3/21x+7/21x=1

10/21x=1

x=21/10 hour or 2 hours and 1 minute

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