Solving Proportion Word Problems

The video tutorial teaches how to solve proportion word problems through three examples: asking girls to prom, calculating cake calories, and determining crying time after failing math tests. Each example involves setting up a proportion, cross-multiplying, and solving for the unknown variable. The tutorial emphasizes the importance of consistent units and provides step-by-step guidance for each problem.

What is the main topic of the video?

• Understanding calculus

• Solving algebraic equations

• Solving proportion word problems

• Learning geometry

In the first problem, how many girls did the narrator ask in 1.5 hours?

• 20 girls

• 10 girls

• 5 girls

• 15 girls

What is the unknown variable in the first problem?

• Number of hours

• Number of girls

• Number of rejections

• Number of dates

What method is used to solve the proportion problems?

• Elimination

• Graphing

• Cross multiplication

• Substitution

How many hours would it take to ask 26 girls according to the first problem?

• 6.8 hours

• 7.8 hours

• 5.5 hours

• 8.8 hours

In the second problem, how many calories does one slice of cake have?

• 320 calories

• 420 calories

• 520 calories

• 620 calories

How many slices are in the whole cake in the second problem?

• 10 slices

• 12 slices

• 14 slices

• 16 slices

What is the unknown variable in the second problem?

• Number of slices

• Calories per slice

• Total calories in the cake

• Weight of the cake

How many total calories are in the whole cake according to the second problem?

• 8040 calories

• 7040 calories

• 6040 calories

• 5040 calories

In the third problem, how many minutes does the narrator cry for each failed math test?

• 25 minutes

• 10 minutes

• 20 minutes

• 15 minutes