In a marathon of 5.75 km, a runner takes two breaks, one after 2.8 km and another after 1.3 km. How many more kilometres does the runner have to run to complete the marathon?
1.65 km
Total distance covered after the second halt = (2.8 + 1.3) km = 4.1 km
Therefore, distance left to be covered = (5.75 - 4.10) km = 1.65 km