Pls thank you so much yall

What could explain what happened when the time was equal to 120 minutes

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?