Question

A work twice or fast as B. if both of them together finish a work in 12 days. how much time shall A take to do it? ​

Answer 1

Answer:

18 days

Step-by-step explanation:

Answer 2

Answer:

Let:

A completes the work in 'x' days.

B will complete the work in '2x' days.

Now:

In 1 day, work done by A = 1/x

In 1 day, work done by B = 1/2x

A.T.Q.

$\implies$ 1/x + 1/2x = 1/12

$\implies$ ( 2 + 1)/2x = 1/12

$\implies$ 3/x = 1/6

$\implies$ x = 3 × 6

$\implies$ x = 18

Hence:

A will take 18 days to complete his work.