If the population of a country doubles in 60 years , in how many years will it be triple (treble) under the assumption that the rate of increase is proportional to the number of inhabitants ?

If the population of a country doubles in 60 years,in how many years will be triple(treble)under the assumption that the rate of increase is proportional in the number of inhabitants?given : log 2=0.6312,log 3=1.0786 .

If the population of country double in 50 years, in how many years will it triple under the assumption that the rate of increase is proportional to the number of inhabitants.

If the population of country double in 50 years, in how many years will it triple under the assumption that the rate of increase is proportional to the number of inhabitants.

If the population of country double in 50 years, in how many years will it triple under the assumption that the rate of increase is proportional to the number of inhabitants.

If the population of country double in 50 years, in how many years will it triple under the assumption that the rate of increase is proportional to the number of inhabitants.

The population of a country doubles in 50 years. How many years will it be five times as much? Assume that the rate of increase is proportional to the number inhabitants. (hint: log2=0.6931, log5=1.6094)

The population of city doubles in 80 years , in how many year will it be triple when the rate of increase is proportional to the number of inhabitants.

A sum of money doubles itself in 12 years. In how many years would it treble itself ?