An audio signal 15 sin 2π(1500t) amplitude modulates 60

An audio signal 15 sin 2π(1500t) amplitude modulates 60 sin 2π(10⁶t) with carrier wave. The modulation in percentage is—

Given m(t) = 15 sin 2π (1500t, i.e., A_m = 15
c(t) = 60 sin 2π (10⁶t), i.e., A_c = 60
Modulation index,

μ =	A_m	=	15	=	1	= 25%
	A_c		60		4