An infinite geometric series has first term $328$ and a sum of $2009$. What is its common ratio?

michaelcai
Nov 14, 2017

#1**+2 **

2009 = 328/(1 - r)

Solve for r, and there you go! :)

This is using the formula:

S = term1/(1 - r)

saseflower
Nov 14, 2017