Ablue scarf is 1.7 yards long. a green scarf is 1 4/5 yards long. which scarf is longer? how much longer?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?