If that's true, that means I solve them faster than the teacher.
"それが本当だと、俺の方が先生より解くの早いことになるな"
- If that's true, that means I solve them faster than the teacher.
- If that is really true, that means I can solve it faster than the teacher.
- If that's true, then that means I solve it faster than (先生の名前).
- If that's true, then that means I solve the Rubik's cube faster than (先生の名前).
If that is true then that means I was able to solve it faster than the teacher.
ご質問ありがとうございます。
この場合、ルービックキューブで、先生が1分でとけると聞いた時、「それが本当だと、俺の方が先生より解くの早いことになるな」と言いたいなら、英語で「If that is true then that means I was able to solve it faster than the teacher.」という風に言えます。
ご参考になれば幸いです。