Homework need help

Denise drew a scale drawing of a shopping center. The scale she used was 1 millimeter : 6 meters. The parking lot is 12 millimeters in the drawing. How long is the actual parking lot?       Answer is ? meters

6 meters is the same as 6,000 millimeters 

You'd multiply 1 mm by 6,000 to get 6 meters

Similarly, multiply 12 mm by 6,000

to get the length of the parking lot     12 mm * 6,000 = 72,000 mm

then, convert mm to meters:               72,000 mm * 1/1,000 meter/mm = 72 meters

?

Set it up as a ratio:

6m  = 1mm    so  

6 m / 1mm =  x m / 16 mm

6/1  * 16  = 72 m