Question

At a school, 89% of students surveyed said they had opened a new bank account within 1 year. If accurate, how many students would you expect to survey before finding one who had NOT opened a new account?

The answer is 10, but you do you get it?

Answer 1

Also asks to round up

Answer 2

Similar question: 27% gives an answer of 2

Answer 3

You need to know the total no. of students first.

Answer 4

Not given