Mr X invested an amount for 2 years @ 15 p.c.p.a at simple interest. Had the interest been compounded, he would have earned 450/- more as interest. What was the amount invested?	Choose the correct choice from the following choices.
A) 22000  B) 24000  C) 25000  D) Data inadequate  E) None of these
30p/100+450=p+15/100−p   ⇒ p = 20,000.   Answer None of these
<result>E</result>
Mr X invested an amount for 2 years @ 15 p.c.p.a at simple interest. Had the interest been compounded, he would have earned 450/- more as interest. What was the amount invested?