A man walking at a rate of 10km/hr crosses a bridge in 18 minutes. The length of the bridge is?	Choose the correct choice from the following choices
A) 1521	B) 3000	C) 1667	D) 1254	E) 1112

Rationale: "speed = 10 * 5 / 18 = 50 / 18 m / sec distance covered in 10 minutes = 50 / 18 * 18 * 60 = 3000 m answer is b"
Answer: B