The perimeter of this rectangle is 30 units. How long is the longer side?
a. 24 units
b. 9 units
c. 5 units
d. 6 units
![The perimeter of this rectangle is 30 units How long is the longer sidea 24 unitsb 9 unitsc 5 unitsd 6 units class=](https://us-static.z-dn.net/files/d3d/33337ff71b887d1fe80bb7c80c335a5c.jpg)