How to solve a word problem using ratios - Free Math Help - Online Tutor

The video tutorial explains how to convert euros to U.S. dollars using ratios and proportions. It begins with a problem statement about converting €44 to dollars with a given exchange rate. The teacher sets up a ratio and explains the concept of proportions. The solution involves solving the proportion using inverse operations, resulting in a conversion of €44 to $64.89. The tutorial emphasizes the importance of setting up comparisons and using inverse properties to solve word problems.

What is the first step in solving the problem of converting euros to U.S. dollars?

• Set up a proportion

• Find the total amount in euros

• Use a calculator to divide

• Multiply the euros by the exchange rate

How do you set up a proportion to find the equivalent U.S. dollars for 44 euros?

• Compare 44 euros to 1 U.S. dollar

• Compare 1 U.S. dollar to 0.678 euros

• Compare 44 euros to 0.678 euros

• Compare 1 U.S. dollar to 44 U.S. dollars

What operation is used to solve the proportion once it is set up?

• Addition

• Division

• Multiplication

• Subtraction

What is the result of converting 44 euros to U.S. dollars using the given exchange rate?

• $44.00

• $30.00

• $78.50

• $64.89

Why is it important to use inverse operations in solving proportions?

• To make the problem more complex

• To avoid using a calculator

• To ensure the variable is isolated

• To increase the number of steps