Question

Shubham can do a piece of work in 30 days and Nina alone can do it in 20 days Meena works for 10 days and leaves how many days will Shubham alone take to finish the work​

Answer 1

Answer:

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Answer 2

Given :  Shubham can do a piece of work in 30 days and

Nina/Meena alone can do it in 20 days

Nina/Mena works for 10 days and leaves  

To Find : how many days will  Shubham alone take to finish the work​

Solution:

Nina/Meena alone can do it in 20 days

=> Nina/Meena alone can do in 1 day = 1/20

=> Nina/Meena alone can do in 10 day = 10/20 = 1/2

Work Left = 1 - 1/2  = 1/2

Shubham can do a piece of work in 30 days

=> Shubham can do  1/2 work  in = (1/2) * 30 = 15 days

Shubham alone take to finish the work​ in 15 days

if Shubham and Meena Started together then shubham will take 15 - 10 = 5 more days

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