To compare the different impacts of the balance of face-to-face and online learning in blended learning, along with learning styles, an experiment was done using a 3x4 design consisting of three blended learning composition groups of 25% face-to-face and 75% online, an equal balance of face-to-face and online, and 75% face-to-face and 25% online. There were four learning style type groups of Diverger, Assimilator, Converger, and Accommodator. The population was student teachers in electrical engineering. Students of each style were randomly allocated to the three blended learning groups. It was found that both the blend of online and face-to-face learning and the types of learning styles affect competence outcomes significantly in some combinations.