Question

a can finish a job in 3 days whereas B finish it in 6 days the time taken to complete the up together in dash days ​

Answer 1

A's 1day work=1/3

B's 1day work=1/6

A+B's together 1 day work= 1/3+1/6=3/6=1/2

so they both will take 1÷1/2 i.e. 2days

Answer 2

The total number of days, A and B work together = 2 days

Step-by-step explanation:

Given,

A can finish a job = 3 days and

B can finish a job = 6 days

To find, the total number of days, A and B work together = ?

A's 1 day's job = $\dfrac{1}{3}$ and

B's 1 day's job = $\dfrac{1}{6}$

∴ (A + B)'s 1 day's job = $\dfrac{1}{3} +\dfrac{1}{6}$

= $\dfrac{2+1}{6}$

= $\dfrac{3}{6}$

= $\dfrac{1}{2}$

∴ The total number of days, A and B work together = 2 days