Frequency of Pendulum: Calculate from 41.35s in 20 Cycles

[physicnoob101]

Homework Statement

Ok so I am given that a pendulum swings 41.35 seconds in 20 cycles. I have to find the frequency of that pendulum

Homework Equations

i know that f=1/T where T is period b/c frequency and period are reciprocal to each other.
i also know that f = N/t where t is the time for i think 1 cycle? but i don't know N

The Attempt at a Solution

Im not given Period so i have no idea how to solve for this. Please help! and please be specific on how u got your answer. Thx

 

[Stonebridge]

Period is the time for ONE cycle.
You are given the time for 20 cycles.
Can you find the time for one?

You know the relationship between period and frequency.