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Algebra 1 : Percent of Change

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #51 : How To Find The Percent Of Increase

Find the percent of increase from $\small 68$ to $\small 80$ .

Possible Answers:

$\small \approx 14\%$

$\small \approx 13\%$

$\small \approx 18\%$

$\small \approx 38\%$

Correct answer:

$\small \approx 18\%$

Explanation:

For this type of problem we use this formula:

$\small \frac{difference}{original} \times 100$ .

"Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from $\small #$ ____ to ____.

In this problem our formula will be filled in as follows:

$\small \frac{80-68}{68} \times 100 = \frac{12}{68}\times 100 \approx 18\%$ .

This is our percent increase.

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Example Question #52 : How To Find The Percent Of Increase

Find the percent of increase from $\small 10$ to $\small 12$ .

Possible Answers:

$40\%$

$\small 40\%$

$20\%$

$\small 80\%$

Correct answer:

$20\%$

Explanation:

For this type of problem we use this formula:

$\small \frac{difference}{original} \times 100$ .

"Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from $\small #$ ____ to ____.

In this problem our formula will be filled in as follows:

$\small \small \frac{12-10}{10} \times 100 = \frac{2}{10}\times 100 = 20\%$ .

This is our percent increase.

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Example Question #53 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$\approx 8.7\%$

$\approx 2.6\%$

$\approx 9.6\%$

$\approx 6.8\%$

Correct answer:

$\approx 8.7\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{25-23}{23}\times 100 = \frac {2}{23}\times 100 \approx 8.7\%$ . This is our percent increase.

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Example Question #54 : How To Find The Percent Of Increase

Find the percent increase from 124 to 145 .

Possible Answers:

$\approx 47\%$

$\approx 16\%$

$\approx 17\%$

$\approx 27\%$

Correct answer:

$\approx 17\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{145-124}{124}\times 100 = \frac {21}{124}\times 100 \approx 17\%$ . This is our percent increase.

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Example Question #55 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$\approx 23\%$

$\approx 22\%$

$\approx 24\%$

$\approx 43\%$

Correct answer:

$\approx 23\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{16-13}{13}\times 100 = \frac {3}{13}\times 100 \approx 23\%$ . This is our percent increase.

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Example Question #56 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$\approx 23\%$

$\approx 15\%$

$\approx 14\%$

$\approx 35\%$

Correct answer:

$\approx 15\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{15-13}{13}\times 100 = \frac {2}{13}\times 100 \approx 15\%$ . This is our percent increase.

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Example Question #57 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$\approx 5.7\%$

$\approx 4.7\%$

$\approx 8.7\%$

$\approx 3.7\%$

Correct answer:

$\approx 5.7\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{37-35}{35}\times 100 = \frac {2}{35}\times 100 \approx 5.7\%$ . This is our percent increase.

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Example Question #58 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$100\%$

$30\%$

$10\%$

$130\%$

Correct answer:

$100\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{24-12}{12}\times 100 = \frac {12}{12}\times 100 = 100\%$ . This is our percent increase.

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Example Question #59 : How To Find The Percent Of Increase

Find the percent increase from to .

Possible Answers:

$\approx 22\%$

$\approx 72\%$

$\approx 64\%$

$\approx 42\%$

Correct answer:

$\approx 64\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{23-14}{14}\times 100 = \frac {9}{14}\times 100 \approx 64\%$ . This is our percent increase.

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Example Question #51 : How To Find The Percent Of Increase

Find the percent increase from to

Possible Answers:

$\approx 17\%$

$\approx 19\%$

$\approx 13\%$

$\approx 16\%$

Correct answer:

$\approx 17\%$

Explanation:

For this type of problem we use this formula: $\frac{difference}{original} \times 100$ . "Difference" is simply the difference between the two numbers given, and "original" is the number that is stated usually after the word "from" , example: from ____ to ____. In this problem our formula will be filled in as follows: $\frac{34-29}{29}\times 100 = \frac {5}{29}\times 100 \approx 17\%$ . This is our percent increase.

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Algebra 1 : Percent of Change

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #51 : How To Find The Percent Of Increase

Example Question #52 : How To Find The Percent Of Increase

Example Question #53 : How To Find The Percent Of Increase

Example Question #54 : How To Find The Percent Of Increase

Example Question #55 : How To Find The Percent Of Increase

Example Question #56 : How To Find The Percent Of Increase

Example Question #57 : How To Find The Percent Of Increase

Example Question #58 : How To Find The Percent Of Increase

Example Question #59 : How To Find The Percent Of Increase

Example Question #51 : How To Find The Percent Of Increase

All Algebra 1 Resources

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