Understanding Ratios and Proportions

The video tutorial explains how to find missing values in a ratio table by maintaining equivalent ratios. It starts with a ratio of teachers to students as 2 to 5 and demonstrates how to find missing values by multiplying or dividing to maintain the ratio. The tutorial then introduces a new example with a ratio of 2 to 12, simplifying it to 1 to 6, and shows how to find missing values using this simplified ratio.

What is the primary purpose of a ratio table?

• To show patterns in data

• To display statistical graphs

• To calculate percentages

• To solve algebraic equations

If the ratio of teachers to students is 2 to 5, what does this imply about the other ratios in the table?

• They will all be random

• They will all equal 5 to 2

• They will all equal 2 to 5

• They will all be different

How many teachers are there if there are 15 students, given the ratio is 2 to 5?

• 7 teachers

• 6 teachers

• 5 teachers

• 8 teachers

What operation is used to find the missing number when the ratio is 2 to 5 and the number of teachers is given?

• Multiplication

• Division

• Subtraction

• Addition

If there are 8 teachers, how many students are there in a 2 to 5 ratio?

• 16 students

• 20 students

• 24 students

• 28 students

What is the missing number of students if there are 12 teachers in a 2 to 5 ratio?

• 25 students

• 30 students

• 40 students

• 35 students

How many teachers are there if there are 75 students in a 2 to 5 ratio?

• 35 teachers

• 30 teachers

• 25 teachers

• 40 teachers

If there are 120 teachers, how many students are there in a 2 to 5 ratio?

• 325 students

• 300 students

• 275 students

• 250 students

What is the simplified form of the ratio 2 to 12?

• 1 to 7

• 1 to 6

• 1 to 8

• 1 to 5

If the ratio is 1 to 6, how many students are there for 4 teachers?

• 20 students

• 24 students

• 32 students

• 28 students