\textbf{194-} An ambulance whose siren frequency is $1200\,\text{Hz}$ starts from a bicycle moving at speed $5\,\dfrac{\text{m}}{\text{s}}$ and overtakes it. After the ambulance passes the bicycle, the cyclist receives a frequency of $1150\,\text{Hz}$ from the ambulance. The speed of the ambulance is how many meters per second? $\left(V = 340\,\dfrac{\text{m}}{\text{s}}\right)$
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(1) $10$ \hspace{2cm} (2) $20$ \hspace{2cm} (3) $30$ \hspace{2cm} (4) $40$
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