Adam borrowed some money at the rate of 6% p.a. for the first 2years, at the rate of 9% p.a. for the next three years, and at the rate of 14% p.a. for the period beyond five years. If he pays a total interest of $ 11400 at the end of 9years, how much money did he borrow?  Choose the most appropriate option.
A) $12000  B) $15000  C) $14500  D) $12900  E) $13200
Let the sum borrowed be x   (x*2*6/100)+(x*9*3/100)+(x*14*4/100) = 11400   (3x/25)+(27x/100)+(14x/25) = 11400   95x/100 = 11400   x = 12000   $12000nswer is $12000
<result>A</result>
Adam borrowed some money at the rate of 6% p.a. for the first 2years, at the rate of 9% p.a. for the next three years, and at the rate of 14% p.a. for the period beyond five years. If he pays a total interest of $ 11400 at the end of 9years, how much money did he borrow?