At 9 AM, the shadow of a 5' (feet) tall boy is 8'. At the same time, shadow of a flagpole beside is 28 feet. What is hei
The principle of quantitative reasoning explains that ratio, percentage and series logic determine correct calculation. Hence 17.5' fits best because it meets mathematical and logical criteria, as documented in authoritative sources on aptitude and reasoning.
Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, discusses vocabulary and comprehension providing guidance for verbal aptitude and logical inference assessment.
