For a light that has an intensity of 60 candles at its source, the intensity in candles, S, of the light at a point d d feet from the source is given by the formula S=60k/d^2 60, where k is a constant. If the intensity of the light is 15 candles at a distance of 2 feet from the source, what is the intensity of the light at a distance of 20 feet from the source? Choose the correct choice from the following options:
A) 3/20 candles  B) 1/2 candles  C) 1 1/3 candles  D) 2 candles  E) 3 candles
3/20 candlesNS = 3/10   S= 60k/d^2   3/20 candlest 2 feet   15 = 60k/4 so k = 1   3/20 candlest 20 feet   S = 60 *1/20^2 = 3/20   3/20 candles
<result>A</result>
For a light that has an intensity of 60 candles at its source, the intensity in candles, S, of the light at a point d d feet from the source is given by the formula S=60k/d^2 60, where k is a constant. If the intensity of the light is 15 candles at a distance of 2 feet from the source, what is the intensity of the light at a distance of 20 feet from the source?