A certain telescope increases the visual range at a particular location from 60 kilometers to 150 kilometers. By what percent is the visual range increased by using the telescope ?  Answers.
A) 30 %
B) 33 1 / 2 %
C) 40 %
D) 60 %
E) 150 %

Rationale: "original visual range = 60 km new visual range = 150 km percent increase in the visual range by using the telescope = ( 150 - 60 ) / 60 * 100 % = 3 / 2 * 100 % = 150 % answer e"
Answer: E