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Person A works twice as fast as person B.  Person B can complete a piece of work independently in 12 days.  Find the number of days taken by person A and B together to finish the work.

 Dec 5, 2019

Best Answer 

 #1
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A rate =  1 job /6 days = 1/6

B rate = 1 job /12 days = 1/12

 

1 job / (1 job /6days + 1 job/ 12 days)

 

1/(1/6 + 1/12) = ?   days

    can you do it from here???

 Dec 5, 2019
 #1
avatar+19820 
0
Best Answer

A rate =  1 job /6 days = 1/6

B rate = 1 job /12 days = 1/12

 

1 job / (1 job /6days + 1 job/ 12 days)

 

1/(1/6 + 1/12) = ?   days

    can you do it from here???

ElectricPavlov Dec 5, 2019

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