Question Statement :

Ronald and Mikhail run three races of 1000 meters each. In the first race, when both start running together from the same point and at the same time, Ronald beats Mikhail by 10 seconds. In the second race, when Ronald gives Mikhail a head-start of 200 m, the race ends in dead heat (i.e. both Ronald and Mikhail reach the end point together). How much head-start should Ronald give Mikhail in the third 1000 m race so that Mikhail beats Ronald by 10 seconds?