Miss waston runs a diatance of 200 meters in 25 seconds work out the avaerage speed

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

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

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.