question_answer

Which among the following statements is true?

A)  Two quantities x and y are in inverse proportion if \[\frac{x}{y}\] is a constant.

B)  If 10 persons can finish a job in 20 days then 5 persons can finish a job in 10 days.

C)  Sides of a square and its perimeter are in indirect proportion.

D)  The number of teeth and the age of a person vary sometimes directly and sometimes inversely with each other.

E)  None of these