Arithmetic Reasoning - General Questions

A clock takes 32 seconds to strike 9. How long will it take to strike 12?

A teacher has 108 chocolates. If she gives 9 chocolates to each student, she is 9 short. How many students are there?

A boy buys 4 notebooks at Rs. 14 each and pays with Rs. 100. How much change does he get?

A clock takes 36 seconds to strike 7. How long will it take to strike 12?

19 poles are fixed in a straight line, 2 m apart. What is the distance between the first and the last pole?