Question

A works twice as fast as B. If B can complete a piece of work independently in 12 days ,then the number of days taken by A and B together to finish the work is.​

Answer 1

Step-by-step explanation:

Ratio of rates of working of A and B = 2 : 1.

So, ratio of times taken = 1 : 2.

B's 1 day's work =

12

1

∴A's one day's work=

6

1

(2 times the work of B)

(A+B)'s one day's work=

6

1

+

12

1

=

12

3

=

4

1

So,A and B together can finish the work in 4 days.

Answer 2

Happy to find another army on brainly ... actually I wanted to the question u have just posted. .