First, figure out how long it takes Julie to read 1 page.

It takes Julie minutes to read one page. Now, multiply this by the number of pages she needs to read to find out how long it will take her.

It will take Julie minutes to read pages.

Set up the following proportion, with being the number of freshmen.

Now, cross-multiply and solve for .

Set up the following proportion, with being the number of freshmen.

Now, cross-multiply and solve for .

First, figure out how long it takes Julie to read 1 page.

It takes Julie minutes to read one page. Now, multiply this by the number of pages she needs to read to find out how long it will take her.

It will take Julie minutes to read pages.

Divide the number of revolutions by the number of minutes to get revolutions per minute:

,

making revolutions per minute the correct choice.

To increase a number by 25% is to take

of the number, or, equivalently, multiply it by

.

Therefore, we divide 7 by :

, so

.

To increase a number by 25% is to take

of the number, or, equivalently, multiply it by

.

Therefore, we divide 7 by :

, so

.

Divide the number of revolutions by the number of minutes to get revolutions per minute:

,

making revolutions per minute the correct choice.

First, find the cost per marker.

Now, multiply this cost per marker by , the number of markers we want.

In order to solve this problem, we need to calculate of . The key word "of" is indicative of multiplication; however, we need to start by converting the percentage into a decimal because you cannot multiply a number by a percent.

We can convert a percent into a decimal by moving the decimal two places to the left:

Next, we can multiply:

Remember, we are taking off the original price, which means we need to subtract.