In a 160 meters race A beats B by 56 m or 7 seconds. A's time over the course is:
Pick:	A) 22 seconds	B) 12 seconds	C) 13 seconds	D) 18 seconds	E) 28 seconds

Rationale: b runs 56 m in 7 sec . = > b runs 160 m in 7 / 56 * 160 = 20 seconds since a beats b by 7 seconds , a runs 160 m in ( 20 - 7 ) = 13 seconds hence , a ' s time over the course = 13 seconds answer : c
Answer: C