Question

A class survey showed 8 out of 25 students had plans to travel over spring break.how many student out of the 400 students in the entire school would you expect to be traveling over spring break?

Answer 1

Divide 400 by 25. You get 16. Multiply 16 by 8. You get 128.

Answer 2

Use ratio and proportion:
$\frac{8}{25}=\frac{x}{400}$

$3200=25x$

$\frac{3200}{25}=\frac{25x}{25}$

$128=x$