What number can be written as 6tens 2 ones?

Can someone me out here and the tell me the greatest common factor

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15