One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. How many minutes will they take to do the job together?

how do i figure this problem out....do not give awnsers plz

Question

One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. How many minutes will they take to do the job together?


how do i figure this problem out....do not give awnsers plz

anonymous · Answer

Person A: 1 job/10 minutes

Person B: 1 job/15 minutes

If they worked together: A + B

1/10 +1/15 = 3/30 + 2/30 = 5/30 = 1/6

anonymous · Answer

so they can do one job in how many minutes?

anonymous · Answer

six ?

anonymous · Answer

and where did the 2/30 come from ??

anonymous · Answer

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