A factory completed 75% of the plan in the first half of the month and half of the plan in the second half of the month, increasing production this month () A 25% B 45% C 30% D 20% There are five teachers in the grade. When there are () students, the two schemes cost the same amount of money. When there are () students, choose scheme 1 to save money. When there are () students, choose scheme 2 to save money

A factory completed 75% of the plan in the first half of the month and half of the plan in the second half of the month, increasing production this month () A 25% B 45% C 30% D 20% There are five teachers in the grade. When there are () students, the two schemes cost the same amount of money. When there are () students, choose scheme 1 to save money. When there are () students, choose scheme 2 to save money

A factory completes 75% of the plan in the first half of the month and one half of the plan in the second half of the month, increasing production this month (a). A 25% B 45% C 30% d 20% sixth grade teachers and students of a school rent a car to go for an autumn outing. The car rental company puts forward two schemes. Scheme 1: teachers pay the original price and students get a 7.8% discount