Exploring Ratio Word Problems

This video tutorial covers solving ratio problems using cross multiplication, also known as the butterfly method. The instructor provides six examples, including converting seconds to minutes, calculating travel distances, and determining quantities in dozens. Each example is explained step-by-step, emphasizing the use of cross multiplication and division to find solutions. Students are encouraged to write down problems and solutions in their notebooks for submission.

How many seconds are there in one minute?

• 90

• 45

• 60

• 30

What is the first step in solving the problem using cross multiplication?

• Divide the numbers

• Multiply the numbers diagonally

• Subtract the numbers

• Add the numbers

If Rahi took 32.5 seconds to solve a problem, approximately how many minutes is that?

• 0.416

• 0.5416

• 0.625

• 0.325

What is the method used to solve the problems in the video?

• Addition

• Cross Multiplication

• Division

• Subtraction

How many minutes are there in three hours?

• 150

• 210

• 120

• 180

If Miss Namore travels 160 miles in 180 minutes, how many miles would she travel in 70 minutes?

• 80

• 70

• 62.2

• 90

How many minutes are there in two hours?

• 150

• 60

• 90

• 120

If Dante travels 132 miles in 120 minutes, how many miles would he travel in 50 minutes?

• 70

• 60

• 55

• 65

How many donuts are there in a dozen?

• 10

• 11

• 12

• 13

If a shop receives 200 roses, how many dozen roses can they sell?

• 16.6

• 17

• 16

• 15