U, V and W together can complete a work in 15 days. U alone can complete the work in 60 days. In how many days V and W together can complete the same work?a)10b)20c)14d)12Correct answer is option 'B'. Can you explain this answer?

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U, V and W together can complete a work in 15 days. U alone can complete the work in 60 days. In how many days V and W together can complete the same work?

a)
10
b)
20
c)
14
d)
12

Correct answer is option 'B'. Can you explain this answer?

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U, V and W together can complete a work in 15 days. U alone can comple...

Given,

(U + V + W) can complete a work in 15 days.

⇒ (U + V + W)’s one day work = 1/15

U alone can complete the work in 60 days.

⇒ U’s one day work = 1/60

⇒ (V + W)’s one day work = (1/15 - 1/60) = (4 - 1)/60 = 1/20

V + W can complete the same work in 20 days.

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U, V and W together can complete a work in 15 days. U alone can complete the work in 60 days. In how many days V and W together can complete the same work?a)10b)20c)14d)12Correct answer is option 'B'. Can you explain this answer?

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