Jambmaths question:
If the population of a town was 240,000 in January 1998 and it increased by 2% each year, what will be the population of the town in January 2000
Option A:
244,800
Option B:
249, 600
Option C:
249,696
Option D:
480,000
Jamb Maths Solution:
$\begin{align} & {{T}_{1}}=240,000 \\ & {{T}_{2}}=a+d,\text{ }{{T}_{3}}=a+2d \\ & d=\frac{2}{100}\times 240,000=1200 \\ & d=1200,\text{ the population increases by 48}00 \\ & {{T}_{1998}}=240,000 \\ & {{T}_{1999}}=240,000+4800=244,800 \\ & {{T}_{2000}}=240,000+2(4800)=249,600 \\\end{align}$
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