UP Police SI Exam 19 Dec 2017 Shift 2 Solved Paper

In a 100 meter race, A beats D by 10 meters or 1 second. In the second race on the same track, A and B start running at the same speed from one end. While D starts running from the opposite end. How many meters will A have covered by the time D meets B if the speed of D is 10/9 m/s more than B?