Please help me!.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

How do i solve uniform motion problems?

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?