In a 200 metres race A beats B by 35 m or 7 seconds. A's time over the course is:

Answer: Option C

B runs 35m in 7sec
∴ B covers 200m in $$\frac{7}{35}\times 200=40\sec$$
B's time over the course = 40 sec
∴ A's time over the course (40 - 7) sec = 33 sec