The kB/s data did not confuse me. What I found confusing was the comment that those values were "about right" for a 30/10 plan and that the OP was on a 30/10 plan by mistake. The 42.7/36.2 test result is clearly not 30/10 territory and customers will be delighted to hear that 27.7/9.67 is what they should expect.

Both kB/s (or MB/s) and Mb/s have their place - depends on what the test is for. In this case since the performance of the 100/50 UFB was the subject Mb/s would have been more appropriate. Perhaps the OP will change his SpeedTest settings for future results.  MB/s is appropriate for 'real world' checks as most data-file sizes are quoted in bytes.