Apair of fair dice is tossed. events a and b are defined as follows. a.{the two numbers rolled are different} b.{at least one of the numbers is greater than 2} are the events a and b mutually exclusive? explain

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?