### All Algebra 1 Resources

## Example Questions

### Example Question #21 : Percent Of Change

Find the percent increase from to .

**Possible Answers:**

**Correct answer:**

To find the percent of increase from one number to the next simply use this formula,

.

In this problem, our "difference" is just .

Next, we place that difference over our original, , and then multiply against in order to convert out answer to a percentage, resulting in about , .

### Example Question #22 : Percent Of Change

Mark's income over the past year has gone up . It is now per hour. What was his hourly income before the raise?

**Possible Answers:**

**Correct answer:**

To find the original value, use the following relation.

We know the percentage, and we know the new value, so we can solve for the old value.

### Example Question #23 : Percent Of Change

What is the percent change from to ?

**Possible Answers:**

**Correct answer:**

To find the percent change we use the formula

.

In this problem, we are asked to find the percent increase from to .

So our formula will look like this:

.

Thus, the percent increase from to is about .

### Example Question #2811 : Algebra 1

What is the percent increase from to ?

**Possible Answers:**

**Correct answer:**

To find the percent increase from one number to the next, the first step is to find the difference between the two numbers given, .

The formula we use to solve this type of equation is:

.

Our original number here is , so our formula:

This means that from to , we had to add about of to to get

### Example Question #25 : Percent Of Change

What is the percent of increase from to ?

**Possible Answers:**

**Correct answer:**

To find the percent of increase from to we first must find the range between the numbers,

.

Then we use this formula to find the percent increase:

.

For this data given,

.

### Example Question #26 : Percent Of Change

Find the percent change.

The cost of a phone went from to . What is the percent of change of the phone?

**Possible Answers:**

**Correct answer:**

To find the percent change of the phone we will need to use the following formula.

Applying our values

to the percent change formula we find,

### Example Question #27 : Percent Of Change

Find the percent of increase from to .

**Possible Answers:**

**Correct answer:**

To find the percent of increase from one number to the next, this formula is used:

.

The numerator in this case would be

.

So our formula would be

.

It is a increase from to

### Example Question #28 : Percent Of Change

Find the percent increase from to .

**Possible Answers:**

**Correct answer:**

To find the percent increase from to , we first recognize that the formula needing to be used is

.

The difference here is,

,

meaning our formula will look like this:

.

This, then, is our percent increase.

### Example Question #29 : Percent Of Change

Find the percent of increase from to

**Possible Answers:**

**Correct answer:**

For this type of problem we use this formula:

.

"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:

.

This our percent increase.

### Example Question #29 : Percent Of Change

Find the percent of increase from to .

**Possible Answers:**

**Correct answer:**

For this type of problem we use this formula:

.

"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:

.

This our percent increase.

Certified Tutor

Certified Tutor