Question

A is twice as good a workman as b and together they complete a work in 12 days. In how many days a alone can do the work?

Answer 1

Answer:

According to the quesion....

2a=b.....(1)

a+b=12....(2)

Subsituting (1) in. (2)....

We get

a+b=12

a+2a=12

3a=12

a=4

a can do work in 4 days...........

Step-by-step explanation:take care...

Answer 2

Hey mate here is your answer.......

Soln....

Let B be x and A be 2x.

(A+B)=12 days

work =1

then it complete work in 1/12 days.

this can also be written as...

x+2x=1/12

3x=1/12

x=1/36

Let's multiply both the equation by 2.

2x=1/36

x=18

Thus A alone can do a work in 18 days.

Hope it will help you.....