Mathematics, 11.03.2021 16:30, santana647

1. The runner Sven Hashmi recently tried to break his country’s 10km running record of 27 min 30 sec. In order to achieve this he had to run at an average time of better than 66 seconds for each 400m lap. His cumulative progress is shown in the graph below. An entry of 4 means he was 4 seconds behind the schedule after the lap shown, whilst –2 means he was 2 seconds ahead of the schedule at that point. How much ahead of the schedule did he run for the last 2000m?

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1. The runner Sven Hashmi recently tried to break his country’s 10km running record of 27 min 30 sec...