Explain the mistake 3.5 times by 10 = 3.50

Determine the relationship of ab and cd given the following points

What percent of 18 is 24? and plz explain thx.

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?