Question

In 2005 for each of the 14 million people present in the country 0.028 were born and 0.008 died , using exponential equation the number of people present in 2015 is

Answer 1

dN/dT = rN

\DeltaN/\DeltaT = rN

as we know that r = b-d
r = 0.028-0.008
= 0.020
N = initial poulation = 14 million

\DeltaN/\DeltaT = 0.020x14 million

\DeltaN/10 = 0.28
\DeltaN = 2.8 million
\DeltaN = Nf - Ni = 2.8
Nf = 2.8 + 14 = 16.8 million
So answer is (b) 17 million