A container has two holes. The $$1^{st}$$ hole alone empties the container in 15 minutes and $$2^{nd}$$ hole alone I empties the container in 10 minutes. If water leaks out at a constant rate, how long (in minutes) does it take if both the holes together empty the container'?

A

6

B

$$\frac{1}{6}$$

C

$$\frac{1}{7}$$

D

7