20℅ of your employees work part time what fraction of the employees work part time

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.

Atotal of 505 tickets were sold for a school play they were either adult tickets or student tickets they were 55 more student tickets so than adult tickets how many adult tickets were sold ?