Question

a,band c working together finish a piece of work in 4 days if a and b together finish in 12 days and a and c finish in 4 days how long will b and c working together take to finish the work​

Answer 1

Answer:

Correct option is

A

12

Let's time taken by C alone to complete the work in x days ∴

4

1

=

9

1

+

18

1

+

x

1

x

1

=

4

1

−

9

1

+

18

1

x

1

=

36

3

x

1

=

12

1

⇒x=12 days

Step-by-step explanation:

Correct option is

A

12

Let's time taken by C alone to complete the work in x days ∴

4

1

=

9

1

+

18

1

+

x

1

x

1

=

4

1

−

9

1

+

18

1

x

1

=

36

3

x

1

=

12

1

⇒x=12 days