Chapter 21, Problem 37Q

To determine

The time it will take for two neutron stars to collide with each other. It is given that the distance between two stars is in the range of $1.1R_{\odot }\text{to}4.8R_{\odot }$, the period of the star system is $7.75\text{hours}$ and the distance between the stars is decreasing at a rate of 3 mm every $7.75\text{hours}$.