If the population of a certain country increases at the rate of one person every 30 seconds, by how many persons does the population increase in 10 minutes?  Choose the correct choice from the following choices
A) 20
B) 30
C) 15
D) 10
E) 80
20nswer = 2 * 10= 
<gadget id="calculator">2 * 10</gadget>
<output>20</output>
20   20nswer= 20
<result>A</result>
If the population of a certain country increases at the rate of one person every 30 seconds, by how many persons does the population increase in 10 minutes?