During a survey it was discovered that 84 out of 124 students have brown eyes. About how many students with brown eyes would you expect to find out of 10 of the student?

Question

There is a simple answer I am sure, but this 40 year old mama’s brain does not remember how to solve!

Answer 1

84/124=21/31=0.677 approx. So in 10 students 10×0.677=6.8 approx would be expected to have brown eyes. Rounding this up we get 7 students.