Stephen buys x pencils and y notebooks for his students. each pencil costs $0.45 and each notebook costs $1.25. he buys a total of 210 pencils and notebooks for $142.50. how many pencils does stephen buy? enter you answer below.

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?