Question

In the year $2000$, a businessman started his business with $25,00,000$. He spends $50,000$ at the end of year $2005$ and $2010.$ His total amount doubles every five years. His amount in the year $2020$ will be :

• A. $48,50,000$
• B. $130,00,000$
• C. $194,00,000$
• D. None of these

Answer 1

The correct option is D None of these

Amount doubles itself in every 5 years.
Initial amount $=25,00,000$
At the end of 5 years (in $2005$), amount $=2\times 25,00,000-50,000=49,50,000$
At end of $2010$, amount $=2\times 49,50,000=50,000=98,50,000$
Amount in $2015=2\times 98,50,000=1,97,00,000$
Amount in $2020=2\times 1,97,00,000=3,94,00,000$