Question

in annual examination of school 3 hour 40 of the students used unfair means out of which 3 over 4 for caught red handed if number of students who escaped be what is 15 find the total number of students who appeared in the annual examination

Answer 1

45 since 3/4×40=30 & 15 escaped

Answer 2

Answer:

800

Step-by-step explanation:

in annual examination of school 3 hour 40 of the students used unfair means out of which 3 over 4 for caught red handed if number of students who escaped be what is 15 find the total number of students who appeared in the annual examination

Let the total number of students be k

Students who used unfair means are 3/40 x k

Students who were caught red handed are 3/40 k x 3/4 = 9 k /160

Students who escaped being caught are 3 k/40  - 9 k/160 = 15

                                               Therefore,          12 k - 9 k / 160 = 15

                                                Therefore,           3 k / 160 = 15

                                                 Therefore,         k / 160 = 5

                                                 Therefore,     k = 800

Hence the  total number of students who appeared in the final examination are 800