Each week every couple receives points from the judges and votes from the public. For every couple the show determines the share they received of the total points given by the judges on the night of the performances, and the share they received of the public's votes and add these two shares together. The couple with the lowest combined total is eliminated from the show.
For example if couples A, B and C respectively receive 38, 26 and 14 points from the judges, the show calculates what share these points represent of the total awarded by the judges on the night. In this example the judges gave 78 points in total, and each couples' share of 78 points breaks down as follows: A: 38 points = 48.72% of 78; B: 26 points = 33.33% of 78; C: 14 points = 17.95% of 78. Let's suppose that when the public votes are tallied, each couple has the following shares: A= 20%, B=40%, C=40%. To determine who's eliminated, these two shares are combined for the total:
Couple A: 20+48.72%= 68.72%
Couple B: 40+33.33%= 73.33%
Couple C: 40+17.95%= 57.95%
In this example, the bottom two couples would be A and C, and C would be eliminated.