a person lent a certain sum of money at 5 % per annum at simple interest and in 8 years the interest amounted to $ 420 less than the sum lent. what was the sum lent?
Choices:
A) 500
B) 600
C) 700
D) 800
E) 900
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">420 / (3/5)</gadget>
<output>700</output>

<result>C</result>
a person lent a certain sum of money at 5 % per annum at simple interest and in 8 years the interest amounted to $ 420 less than the sum lent. what was the sum lent?
divide(420, subtract(const_1, divide(multiply(5, 8), const_100)))
"p - 420 = ( p * 5 * 8 ) / 100 p = 700 the answer is c ."