A certain telescope increases the visual range at a particular location from 100 kilometers to 150 kilometers. By what percent is the visual range increased by using the telescope ?  Choose the correct choice:  A) 30%  B) 33 1/2%  C) 40%  D) 60%  E) 50%
Original visual range = 100 km   New visual range = 150 km   Percent increase in the visual range by using the telescope   = (150-100)/100 * 100%   = 1/2 * 100= 
<gadget id="calculator">1/2 * 100</gadget>
<output>50</output>
50 %   Answer 50%
<result>E</result>
A certain telescope increases the visual range at a particular location from 100 kilometers to 150 kilometers. By what percent is the visual range increased by using the telescope ?