R=p/4(c+k) for k, please help, thank you!

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

Which fraction represents the ratio 35 : 42 in simplest form