Nitin borrowed 8000 at the rate of 6% p.a. for the first three years, 8% p.a.for the next five years and 12% p.a.for the period beyond eight years. At the end of eleven years how much money did he give as interest?	Answers:
A) 8000  B) 10,000  C) 5,000  D) 7,520  E) None of these
Let the interest be i Then,   (8000×3×6/100)+(8000×5×8/100)+(8000×3×12/100)=i   ⇒ 1440 + 3200 + 2880 = i   ⇒ i = 7520   Answer 7,520
<result>D</result>
Nitin borrowed 8000 at the rate of 6% p.a. for the first three years, 8% p.a.for the next five years and 12% p.a.for the period beyond eight years. At the end of eleven years how much money did he give as interest?