Aniket deposited two parts of a sum of 25000 in different banks at the rates of 15% per annum and 18% per annum respectively. In one year he got 4050 as the total interest. What was the amount deposited at the rate of 18% per annum?  Choose the correct choice from the following choices.
A) 9000
B) 18000
C) 15000
D) Data inadequate
E) None of these
Let the amount deposited at the rate of 15% per annum be x.   15% of x + 18% of (25000 – x) = 4050   or, 15% of x + 18% of 25000 – 18% of x = 4050   or, 3% of x = 4500 – 4050 = 450 ⇒ x = 15000   \ Amount deposited at 18% = (25000 – 15000 ) = 10000   Answer None of these
<result>E</result>
Aniket deposited two parts of a sum of 25000 in different banks at the rates of 15% per annum and 18% per annum respectively. In one year he got 4050 as the total interest. What was the amount deposited at the rate of 18% per annum?