a sum of money deposited at c. i. amounts to rs. 500 in 3 years and to rs. 650 in 4 years. find the rate percent?	Choose one
A) 25 %  B) 30 %  C) 35 %  D) 40 %  E) 45 %
<gadget id="calculator">650 - 500</gadget>
<output>150</output>

<gadget id="calculator">150 / 500</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 100</gadget>
<output>30</output>

<result>B</result>
a sum of money deposited at c. i. amounts to rs. 500 in 3 years and to rs. 650 in 4 years. find the rate percent?
multiply(divide(subtract(650, 500), 500), const_100)
"500 - - - 150 100 - - - ? = > 30 % answer : b"