what is the rate percent when the simple interest on rs. 2000 amount to rs. 320 in 4 years? Pick:
A) 4.5 %
B) 4.25 %
C) 4 %
D) 4.3 %
E) 4.1 %
<gadget id="calculator">100 * 320</gadget>
<output>32_000</output>

<gadget id="calculator">2_000 * 4</gadget>
<output>8_000</output>

<gadget id="calculator">32_000 / 8_000</gadget>
<output>4</output>

<result>C</result>
what is the rate percent when the simple interest on rs. 2000 amount to rs. 320 in 4 years?
divide(multiply(const_100, 320), multiply(2000, 4))
"interest for 1 year = 320 / 4 = 80 interest on rs 2000 p / a = 80 interest rate = 80 / 2000 * 100 = 4 % answer : c"