A certain school has 300 students, 142 of whom are boys. It has 30 teachers, 12 of whom are men. What percent of the total number of students and teachers in the school is female?

Q. There are $20$ teachers for $300$ students in a school, then the ratio of the number of students to the number of teachers is

Q. A school has 120 students. Each student attends 5 classes of different subjects and each class has 20 students and 1 teacher. If in a day, a teacher teaches 3 classes, what is the minimum number of teachers in the school?

Q. A school has $560$ students. The number of girls is $14\frac{2}{7}\%$ of the number of boys. How many girls are there in the school?

Q. The ratio of the number of teachers to students in a school is 1:20. If there are 240 students in the school, how many teachers are there?

Q. A residential school has $580$ students and $120$ teachers on its rolls. If the annual fee per student Rs. $136000,$ What is the total fee collected annually by the school?