Solving Systems by Inspection

Solving Systems by Inspection

by Abigail Garcia

​Steps to Solve

1. ​Highlight or circle important keywords.

2. ​What do we know?

3. ​What do we want to find out?

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​The sum of two numbers is 100. Twice the first number plus twice the second number is 200. What are the numbers?

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Given:

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​Unknown:

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​The perimeter of a rectangle is 40 inches. Twice the length of the rectangle is 20 minus twice the width. What are the length and width.

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​Given:

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​Unknown:

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​Coffee worth $2.95 a pound was mixed with coffee worth $3.50 a pound to produce a blend worth $3.30 a pound. How much of each kind of coffee was used to produce 44 pounds of blended coffee?

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​Given:

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​Unknown:

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​Jeri has a total of 40 pets with a total of 160 legs. If she owns only cats and dogs, how many of each does she have?

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​Given:

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​Unknown:

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​Pam's age plus Tom's age is 65. Twice Pam's age is equal to 130 twice Tom's age. How old are they?

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​Given:

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​Unknown: