
Speed:
 measured in knots per hour to nearest tenth.

Distance:
 measured in miles to nearest tenth.
 measure with dividers on nearest latitudes

Time:
 measured in minutes
 divide minutes by 60 to get 00.0 hours [000min/60 = 00.0 hrs]
 multiply tenths of hours by 60 to get minutes [.0h x 60 = 00 min]

Formulas:
 Cover the unknown in the figure below and do the calculations:
 S = (60min)x(D)/T
 T = (60min)x(D)/S
 D = (S)x(60min)/T
