AP and TS EAMCET Medical 2020 Model Paper 2

A police car moving at 22ms‌−1 chases a motar cyclist. The police man sounds his horn at 176Hz, while both of them move towards a stationary siren of frequency 165Hz.If the motor cyclist doesnot observe any beats then the speed of the motor cycle is (velocity of sound in air = 330ms‌−1)