Simple interest on a sum at 4% per annum for 2 years is Rs.80. The C.I. on the same sum for the same period is?
Options
A) 81.6
B) 81.9
C) 81.3
D) 81.1
E) 81.4
SI = 40 + 40   CI = 40 + 40 + 1.6= 
<gadget id="calculator">40 + 40 + 1.6</gadget>
<output>81.6</output>
81.6   81.6nswer:81.6
<result>A</result>
Simple interest on a sum at 4% per annum for 2 years is Rs.80. The C.I. on the same sum for the same period is?