Robert is dividing his baseball cards equally among himself, his brother, and his three friends. robert is left with nine cards. how many cards did robert give away? write and solve an equation to solve the problem.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?