Some amount out Rs.7000 was lent at 6% per annum and the remaining was lent at 4% per annum. If
the total simple interest from both the fractions in 5 years was Rs.1600, the sum lent of 6% per annum
was	Pick:
A) Rs. 2400 B) Rs. 2200 C) Rs. 2000 D) Rs. 1800 E) None of these
Explanation :   Total simple interest received , I = Rs.1600   Principal , p = 7000   period, n = 5 years   Rate of interest, r = ?   Simple Interest, I = pnr100=&gt;1600=7000×5×r100=&gt;r=1600×1007000×5=16035=327%   By the rule of alligation, we have   Rate of interest % from part1 Rate of interest % from part2   6 4   Net rate of interest %   32/7   32/7 - 4 =4/7 6 - 32/7 = 10/7   =&gt; Part1 : part2 = 4/7 : 10/7 = 4 : 10 = 2 : 5   Given that total amount = Rs.7000   The amount lent of 6% per annum (part1 amount) = 7000×27=Rs.2000   Answer : Option Rs. 2000
<result>C</result>
Some amount out Rs.7000 was lent at 6% per annum and the remaining was lent at 4% per annum. If
the total simple interest from both the fractions in 5 years was Rs.1600, the sum lent of 6% per annum
was