Question

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

Answer 1

so if x people were surveyed,
`(7)/(8)` people owned a bike and
`(1)/(8)` did not.

The difference between them is 72:

`(7)/(8)` x-\frac{1}{8} [/tex] =72
so this means that

`(6)/(8)` x=72

let's simplify:


`(3)/(4)` x=72

and divide by 3:


`(1)/(4)` x=24

and mupliply by 4:

x=96

so 96 people were surveyed