Answer:
x = 2.5
Step-by-step explanation:
y varies directly with x means the times that y increases, the times x increases and vice versa.
If y increases from 3/5 to 12 is being increased:
12 / 3/5 = 20 times
Thus, the value of x is being increased by definition, also 20 times. The value of x is:
x = 0.125 * 20 = 2.5
x = 2.5
