Math I dont understand, Ive been trying for an hour now

Question

Tracy answered all of the questions on the math test correctly. She scored 100 points, or 100%.

Marcel answered the extra-credit questions on the test and scored 120 points.

Which percent, fraction, and decimal shows Marcel's score in relation to Tracy's score?

How do you do this??

Answer 1

Tracey answered 100 out of 100, which is 100%. Marcel answered 20 more than 100, which is an extra 20%, making the score 120%. 120% is 1.20 times 100%. The percent for Marcel is 120%, while the score for Marcel is 1.20 times the score for Tracy. The fraction is

120/100 = 6/5