If 40% of a certain number is 160, then what is 10% of that number?	Choose the correct option.
A) 100 B) 40 C) 80 D) 120 E) 110

Rationale: explanation : 40 % = 40 * 4 = 160 10 % = 10 * 4 = 40 answer : option b
Answer: B