Ambulance runs urgently on slope! Siren sounds

SOLVED: An ambulance siren sounds off with a frequency of 250 Hz as it approaches an intersection where you are standing as a spectator. You hear the siren with a frequency of 175 Hz. a) Assuming the speed of sound is 340 m/s, what is the speed of the ambulance? b) After the ambulance passes, you begin to walk at a pace of 2 m/s in the opposite direction as the ambulance. Assuming the speed of the ambulance stays the same, what is the new frequency you hear the siren at?

Patient arriving to ER in hospital

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Fees paid by NHS to ambulance-chasing lawyers rocket by 80 per cent in a year

These are not lawyers these are slip and fall ambulance chasing hacks