We figure this out by dividing 500 by 25. The answer is 20, so the ratio is 1 teacher for 20 students.
Let x = number of teachers
19x = number of students
x + 19x = 500
20x = 500
x = 25 teachers
19x = 475 students
25% of 500 students= 25% * 500= 0.25 * 500= 125 students
25:1
25 students to sit at 5 tables is a ratio.
25% IS 25/100 or 1/4 or 0.25.0.25 * 500 students = 125 students
There are 25 teachers and 487 students.
the ratioa of 25 to 500 is 1-20
The ratio is 1 to 2
total number of students are 25 so givin boys number is 12 that way ratio of girls 13/25
16 25
25 x 12 = 300 Does that answer your question?
For this type of problem, order doesn't matter in which you select the number of people out of the certain group. We use combination to solve the problem.Some notes to know what is going on with this problem:• You want to form a committee of 2 teachers and 5 students to be formed from 7 teachers and 25 students • Then, you select 2 teachers out of 7 without repetition and without considering about the orders of the teachers.• Similarly, you select 5 students out out 25 without repetition and without considering about the orders of the students.Therefore, the solution is (25 choose 5)(7 choose 2) ways, which is equivalent to 1115730 ways to form such committee!
62.5