If 40% of a certain number is 160, then what is 90% of that number?
Answers:	A) 270	B) 380	C) 260	D) 360	E) 290

Rationale: "explanation : 40 % = 40 * 4 = 160 90 % = 90 * 4 = 360 answer : option d"
Answer: D