A carrier is amplitude modulated by two sinusoidal signals

A carrier is amplitude modulated by two sinusoidal signals of different frequencies with individual modulation depths of 0.3 and 0.4. The sideband power is—

Given that,
μ₁ = 0.3, μ₂ = 0.4
μ_eff = √μ₁²+ μ₂²
= √(0.3)²+(0.4)² = 0.5
Now,

P_t = P_c		1 +	μ_eff²
			2

= P_c		1 +	0.5²
			2

or
P_t = P_c+0.125P_c
Where 0.125 P_c is the power in two sideband.
Now, % sideband power in two sideband.

Now, % sideband power =	sideband power	×100
	total power

=	0.125	×100 = 11.11%
	1.125