John invested some money at the rate of 6% p.a. for the first three years, 9% p.a.for the next five years and 9% p.a.for the period beyond eight years. How much interest will he get after eleven years if he invested Rs 10000?	Choose the most appropriate option
A) 8,000  B) 9,900  C) 12,000  D) 7,000  E) None of these
Let the interest be i. Then,   (10000×3×6/100)+(10000×5×9/100)+(10000×3×12/100)=i   ⇒ 1800 + 4500 + 3600 = i   ⇒ i = 9900   Answer 9,900
<result>B</result>
John invested some money at the rate of 6% p.a. for the first three years, 9% p.a.for the next five years and 9% p.a.for the period beyond eight years. How much interest will he get after eleven years if he invested Rs 10000?