phillip plays mario kart every 10 days and wii sports every 14 days. when will be the first time he plays both games on the same day?

Which one is the correct answer, and why?

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?