GATE Electronics and Communications (EC) 2018 Solved Paper

Consider the following amplitude modulated signal: s(𝑡) = cos(2000 𝜋𝑡) + 4 cos(2400 𝜋𝑡) + cos(2800 𝜋𝑡).The ratio (accurate to three decimal places) of the power of the message signal to the power of the carrier signal is ________.