What is 11.25 x 34.67 + 34.67 divided by 2?

Can someone me with this problem i don't understand i need

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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?