Coin Problem 3
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Lesson Summary:
This lesson teaches how to solve word problems involving multiple types of coins using a chart and one variable. The problem presented in the lesson involves dimes, nickels, and quarters, and the solution is found by assigning a variable to the number of dimes, then using the given information to find the number of quarters and nickels. The final step involves adding up the values of each type of coin to confirm that the total equals the given amount.
Lesson Description:
Shows how to solve a word problem having to do with different coins and their values. This is solved with one variable, but more than one coin is defined. It is done with a chart.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you write an equation, solve the equation, and check your answer to coin problems in Algebra?
- How do you solve a coin problem without using guess and check?
- How do you make a chart to solve a coin problem?
- If Beth has 7 more quarters than dimes and 1 fewer nickel than dimes, and their total value is $3.70, how many of each type of coin does Beth have?
- How do you solve 25(x + 7) + 10x + 5(x - 1) = 370?
- How do you solve a coin problem if you know the total amount of money involved and there are 3 different types of coins?
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Staff Review
This third video in the series is another really good explanation of how to determine how many of each type of coin a person has given the total value of the person's coins and some more information about the relationship between the number of coins the person has. This example is a bit more difficult because 3 different types of coin are in this example.
