Time is entered in minutes speed in knots and distance in nautical miles the same formula will work for statute miles and kilometres. Rate and speed are similar since they both represent some distance per unit time like miles per hour or kilometers per hour. If rate r is the same as speed s r s dt.
If you can run Windows applications you might prefer a nicer and more compact version of these calculators that ships with my bike gear calculator or the additional.
It also explains how to attempt typical examination style questionsPractice Questions. Calculating the average speed from distance and time the following formula can help you. To calculate time divide distance by speed. The formula for distance if you know time duration and the average speed is.