If Rs.450 amount to Rs.540 in 4 years, what will it amount to in 6 years at the same rate % per annum?  Choose the correct choice from the following choices:
A) 288
B) 327
C) 585
D) 972
E) 271
90 = (450*4*R)/100   R = 5%   I = (450*6*5)/100= 
<gadget id="calculator">(450*6*5)/100</gadget>
<output>135</output>
135   450 + 135= 
<gadget id="calculator">450 + 135</gadget>
<output>585</output>
585   Answer: 585
<result>C</result>
If Rs.450 amount to Rs.540 in 4 years, what will it amount to in 6 years at the same rate % per annum?