Question

Vishal and Ramya working together can dig a trench in 6 hours while Vishal can dig it in 12 hours. In how many days can Ramya alone dig the trench?​

Answer 1

Answer:

Ramya can trench 2 days

Answer 2

The number of hours can Ramya alone dig the trench = 12 hours

Step-by-step explanation:

We have,

(Vishal and Ramya)'s 1 hour's work = $\dfrac{1}{6}$ and

Vishal's 1 hour's work = $\dfrac{1}{12}$

To find, the number of hours can Ramya alone dig the trench = ?

∴ Ramya's 1 hour's work =

(Vishal and Ramya)'s 1 hour's work - Vishal's 1 hour's work

= $\dfrac{1}{6} -\dfrac{1}{12}$

= $\dfrac{2-1}{12}$

= $\dfrac{1}{12}$

∴ The number of hours can Ramya alone dig the trench = 12 hours