If 0.20: x : : 4 : 2, then x is equal to
Choose the most appropriate option.
A) 0.2	B) 0.3	C) 0.1	D) 0.5	E) none

Rationale: "sol . ( x × 4 ) = ( 0.20 × 2 ) ⇒ x = 0.4 / 4 = 0.1 . answer c"
Answer: C