Question

In an examination 72%of the total examinies passed If the number of failure is 392 find the total number of examinies

Answer 1

total number passed=72%

x be total no. of students

failure=392/x

passed=72/100*x

  =0.72*x

x=392+0.72x

392=x-0.72x

392=0.28x

x=392/0.28

x=1400

Answer 2

392= 28%

1%= (392/28)=14

72%= 72*14=1008

total number of examinies= 72%(no of pass) + 28%(no of failures)

=392+1008=1400