I did it the tradition way but it will probably take longer. R*T=D, So: 75km/hr * T = 1km T = 1/75hr Then add two seconds, but first convert it two hrs 2sec * 1min/60sec * 1hr/60min = 1/1800hr 1/75hr + 1/1800hr = 1875/135000 Simplify 1/72hr Now use this time to solve for the rate: R * 1/72hr = 1km R...