Answer:
12
Step-by-step explanation:
60÷100=0.6 0.6x20=12
Therefore the sports shop has 12 part-time employees
Step-by-step explanation:



The length could be 5 and width 3. That would equal 15
Answer: 
Step-by-step explanation:
Let be "x" the height inches (in the model) of a 84 foot building.
According to the information provided in the exercise, we know that the height of a two-story building is 21 feet and in the scale model its height is 3 inches.
Knowing this, we can set up the following proportion:

The final step is to solve for "x" in order to calculate its value. We get that this is:

Therefore, an 84 foot building will be 12 inches tall in the model.