Pick a ratio and click the two statement lines it is built from.
Click the correct numerator and denominator to compute it.
is always the same two-step move: find the right numerator, find the right denominator. The current ratio's cousin uses the same two lines, subtracted instead of divided.
Turnover and return ratios need one more thing an ending-balance ratio does not: an average of the beginning and ending balance, since they compare a whole year's activity to a balance that changed all year.