2cm: 65 miles the actual distance between two cities is 125 miles. what is the distance between the two cities on a map.

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

How do i do this activity, is appreciated

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8