HEY YOU, YES YOU, I NEED YOUR HELP ASAP! Which is the correct answer

How do you convert 1.27 to a percentage

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?

Yvaries inversely as x. y =12 when x=5. find y when x=4