If the population of a certain country increases at the rate of one person every 25 seconds, by how many persons does the population increase in 1 hour? Pick one:  A) 100  B) 120  C) 144  D) 180  E) 160
Answer = 2.4 * 60= 
<gadget id="calculator">2.4 * 60</gadget>
<output>144</output>
144   Answer is 144
<result>C</result>
If the population of a certain country increases at the rate of one person every 25 seconds, by how many persons does the population increase in 1 hour?