If in a race of 90m, A covers the distance in 20 seconds and B in 25 seconds, then A beats B by:	Pick one:  A) 20 m  B) 16 m  C) 11 m  D) 10 m  E) 18 m

Rationale: explanation : the difference in the timing of a and b is 5 seconds . hence , a beats b by 5 seconds . the distance covered by b in 5 seconds = ( 90 * 5 ) / 25 = 18 m hence , a beats b by 18 m . answer e
Answer: E