Markers and Student Ratios

The video tutorial explains a problem where a class of 25 students shares 100 markers, with five students absent. The teacher guides through understanding the problem, setting up a ratio of students to markers, and logically eliminating incorrect multiple-choice options. The correct answer is determined by calculating the ratio, revealing that each student has five markers.

How many students are in the class initially?

• 30

• 25

• 20

• 15

How many markers does the class have in total?

• 125

• 100

• 75

• 50

What happens to the number of students when 5 are absent?

• It increases by 5

• It decreases by 5

• It doubles

• It remains the same

How many students are present when 5 are absent?

• 30

• 15

• 20

• 25

What is the ratio of students to markers when 5 students are absent?

• 1:5

• 1:4

• 5:1

• 4:1

Which statement is logically incorrect based on the number of markers?

• For every 5 students, there is 1 marker

• For every 4 students, there is 1 marker

• For each student, there are 4 markers

• For each student, there are 5 markers

Why can we eliminate the option 'For every 4 students, there is 1 marker'?

• Because the number of markers is irrelevant

• Because there are more markers than students

• Because the number of students is equal to markers

• Because there are more students than markers

What is the correct number of markers per student?

• 5

• 4

• 2

• 1

What mathematical operation helps determine the number of markers per student?

• Subtraction

• Addition

• Division

• Multiplication

What is the unit rate in this problem?

• The number of students per marker

• The number of markers per student

• The total number of students

• The total number of markers