If B takes 20% less time than A, to cover the same distance. What should be the speed of B, if A works at a rate of 10 km/hr?
Choose the most appropriate option:  A) 12.5 km/hr  B) 10 km/hr  C) 15 km/hr  D) 20 km/hr  E) 25 km/hr
Explanation:   S1 = 10 kmph   if T1 = 100   T2 = 80   10 x 100 = 80 x S2   S2 = 12.5 km/hr   12.5 km/hrnswer: Option 12.5 km/hr
<result>A</result>
If B takes 20% less time than A, to cover the same distance. What should be the speed of B, if A works at a rate of 10 km/hr?