Seven out of every 8 students surveyed owns a bicycle. The difference between the number of students who own a bike and those who do not is 72. How many students were surveyed?

The total number of students were surveyed is 96 students

Step-by-step explanation:

         The given is,

                Seven out of every 8 students owns a bicycle

                The difference between the number of students who own a bike and those who do not is 72.

Step: 1

    Let, T - Total number of students were surveyed

           X - Students who own a bike

           Y - Students who do not bike

Step:2

          From the given,

          Ratio of Students own a bike is =

          Ratio of students who do not own a bike is =

Step:3

         X = Ratio of students who own bike × Total number of students

            = × T

         Y = Ratio of students who do not own bike × Total number of students

             = × T

Step:4

        From given,                     (∵ Difference is 72)

         X-Y = 72

         ( × T) - ( × T) = 72

         0.875T - 0,125T = 72

         0.75T = 72

         T = 96 students.

Step:5

        X = × T = × 96 = 84

        Y = × T = ×96 = 12

Result:

        The total number of students were surveyed is 96 students and 84 students have a own bike and 12 students do not have a own bike.

s

step-by-step explanation:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.