Apopulation is growing at an annual rate of 1.2%. find the rate of growth per decade.

The population's annually growing rate is = 1.2%

and in 1 decade the no. of years is 10 .

so ,

in 10 years the population will grow u
= 10×1.2% = 12%

hence the rate of growth per decade is 12% of the population .

hope it helps !
#Himanshu jha