In a km race: A beats B by 28m or 7 sec. Then: find As time over the course.

In 1 km race, A beats B by 18 m or 9 s. Find the A's time over the course

In 1 km race,A beats B by 36 m or 18 s. Find theA'stime over the course.

In a 200m race,A beats B by 35m or 7 seconds.A^( 's time over the course is (a) 40sec) (b) 47sec(c)33sec(d) None of these

In 1 km race,P beats Q by 72 m in 12 s. Find the P s time over the course.

In a 100m race,A beats B by 20m or 5 seccond the speed of A

In a 1000 m race, X beats Y by 140 m or 14 s. What will be the X's time over the course?