The picture shows the footprints of a man walking. The pace length P is the distance between the rear of two consecutive footprints. For men, the formula, n P =140, gives an approximate relationship between n and P where, n = number of steps per minute, and P = pace length in metres. b Bernard knows his pace length is 0.80 meters. The formula applies to Bernard’s walking. Calculate Bernard’s walking speed in meters per minute and in kilometers per hour. Show your working out.