if the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 10 minutes?	Choices:
A) 40	B) 100	C) 150	D) 240	E) 300
<gadget id="calculator">60 / 15</gadget>
<output>4</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<result>A</result>
if the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 10 minutes?
multiply(divide(const_60, 15), 10)
"since the population increases at the rate of 1 person every 15 seconds , it increases by 4 people every 60 seconds , that is , by 4 people every minute . thus , in 10 minutes the population increases by 10 x 4 = 40 people . answer . a ."