A Population Growing Continuously at an Annual Rate R Will $t = \frac { \ln 3 } { r }$

Short Answer

A population growing continuously at an annual rate r will triple in a time t given by the formula $t = \frac { \ln 3 } { r }$ . How long will it take the population of a town to triple if it is growing at the rate of 13% per year?
Please round the answer to one decimal place. __________ yr