A man is positioned between two tall buildings, P and Q. His distance from P is $50\,\text{m}$ and from Q is $200\,\text{m}$. He blows a horn. The first echo from building P is heard, and then $1.0\,\text{s}$ later he hears the first echo from building Q. What speed of sound is obtained from this information?
- A$250\,\text{m s}^{-1}$
- B$300\,\text{m s}^{-1}$
- C$330\,\text{m s}^{-1}$
- D$500\,\text{m s}^{-1}$