Question

‘A’ takes double the time to do certain work than “B’. If together they complete the work in 4 hours, find the time required for B to complete the work alone. (A) 3 hrs. (B) 12 hrs. (C) 6 hrs. (D) Any other​

Answer 1

Answer:

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Step-by-step explanation:

Correct option is

D

6 days

Suppose A,B and C take x,

2

x

and

3

x

days respectively to finish the work.

Then, (

x

1

+

x

2

+

x

3

)=

2

1

∴

x

6

=

2

1

∴x=12

So, B takes

2

12

=6 days to finish the work

Answer 2

Answer:

your answer is correct but Solution is wrong The solution:

Let the work done by A be x and B be 2x

Therefore,2x +x =1/4

3x=1/4

x=1/12

Therefore work done by A = 12hrs and B=12/2

=6hrs