Time duration Numerical Reasoning Question

Subtract times column by column, borrowing 60 minutes from the hours when needed. The correct answer is 129 min. Traps to avoid: 69 min comes from the "lost an hour" error; 120 min comes from the "whole hours only" error; 189 min comes from the "extra hour" error; 209 min comes from the "subtracted as decimals" error.