A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same ?
In a school there are 10 periods per day of 40 minutes each. Students want to reduce the number of periods but the principal doesn't want to reduce the number of working hours. How can the principal to reduce the number of periods to 8 without changing the total working hours?