Question

A and B together can do a certain work m 16 days, whereas B and together and
is twice as good a workman as C, then B alone can do the same work​

Answer 1

Given : A and B together can do a certain work m 16 days, whereas B and C together in 20 days and  A is twice as good a workman as C,

To Find : B alone can do the same work​ in how many days

Solution:

A   can do work in A Days

B  can do work on B days

C can do work in 2A  Days   ∵A is twice as good a workman as C,

1/A  + 1/B = 1/16

1/B + 1/2A  = 1/20

=> 1/A  - 1/2A  = 1/16 - 1/20

=> 1/2A  = 1/80

=> A = 40

1/40 + 1/B = 1/16

=> 1/B = 3/80

=> B = 80/3

B alone can finish work in 80/3 Days

B alone can do the same work​ in 80/3 days

Learn More:

A,b,c can do a piece of work in 150 days,75 days,75/2 days ...

https://brainly.in/question/8268307

A+B allternaviely can do a work 7days and B+A alternatively can do ...

https://brainly.in/question/10490927