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Person 1 can do a certain job in fifteen minutes, and person 2 can do the same job in thirty minutes. When completing the job together, which expression would be used to represent the amount of work done
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Person 1 can do a certain job in fifteen minutes, and person 2 can do the same job in thirty minutes. When completing the job together, which expression would be used to represent the amount of work done by person 1?

A.1/15
B.x/15
C.15
pls asap

User Helic
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2 Answers

6 votes
the answer to this is b hope helps i dont really know
User Derek Beattie
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6 votes
The detailed answer is
Let time taken by first person =x
So x = 15
Let time taken by next two persons be y
So 2y=30 or y=15
So x= y = 15
Time taken = 1/x=1/y=1/15
Answer is a
User Yshahak
by
6.5k points
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