Question

At an assembly 12 out of the first 20 students who entered the gym were carrying a binder. There will be 800students at the assembly. What is a reasonable prediction for the number of students who will have a binder?

Answer 1

EXPLANATION

Applying the unitary method, if there are 12 out of the first 20 students who entered the gym carrying a binder, for 800 students this would be as follows:

$\text{Number of students carrying binder=}\frac{12\text{ binder}}{20\text{ students}}\cdot800\text{ students}$

Multiplying terms and simplifying:

$\text{Number of students carrying binder=}480\text{ }$

There will be 480 students carrying a binder.