Yes, of course. A teacher is a human being, so a teacher who is incompetent or dishonest at
his/her job can falsify the records in any old way that doesn't reflect the true nature of the work
you do in the class. But what would that get you, really ? Wouldn't the day come eventually
when somebody looks at your school record, and expects you to know something that you
don't know, or expects you to be able to do the kind of learning that you can't do ?
How embarrassing is that !
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The original mark up was 50%.
what you do is you divide 100 by the amount the test was out of then times your answer by your mark
A 100% mark up doubles the selling price.
-100
33 to 45 is a 36.36% increase.