Megapixel Math

You have a digital image that measures 2202 pixels x 1704 pixels. You want your final print to have a resolution of 300 dots per inch (dpi). What’s the largest print you can make? Use Photoshop’s Image Size controls to find out.

Open your image in Photoshop. Choose Image > Image Size and deselect the Resample Image option. Now type 300 in the Resolution field and Photoshop shows you the size of your image in inches.

Now if a train going 60 miles an hour leaves Chicago at 11:30…

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