If A is equal to 20% of B and B is equal to 25% of C. Then what percentage of C equal to A ?

Answer: Option C

A = 20% of B
A = $$\frac{1}{5}$$ B
$$\frac{A}{B}=\frac{1}{5}$$ ----(i)
B = 25% of C
B = $$\frac{1}{4}$$ C
$$\frac{B}{C}=\frac{1}{4}$$ ----(ii)
Multiply (i) and (ii) We get
$$\frac{A}{B}\times \frac{B}{C}=\frac{1}{5}\times \frac{1}{4}$$
$$\frac{A}{C}=\frac{1}{20}$$
Percent of C is equal to A
$$=\frac{1}{20}\times 100=5\%$$