On a map, 1 inch equals 20 miles. If two cities are 3 inches apart on the map, how far are they actually apart?

The cities are actually 60 miles apart.

Step-by-step explanation:

Take the scale factor 1 inch = 20 miles and multiply it by the number of inches given.

3 × 1 inch  and  3 × 20 miles   3 × 20 = 60

3 inches represents 60 miles

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.