Establish equation
According to the assumption that 250 meters are repaired every day, the following equation can be established: 3000/x-3000/(x+250) = 2. This equation can help us calculate how many meters we plan to build.
solve an equation
Solving this equation, we get x=500. This means that it was originally planned to build 500 meters a day, but in fact it was built 750 meters a day.
♀? Adjust the fitness plan
According to the calculation results, we need to adjust the fitness plan and increase the daily distance from 500 meters to 750 meters. Only in this way can we ensure that our fitness plan will not be affected and achieve the expected results.