Review of Introductory Mathematics
Express 1200% in decimal form.
Percent differentials are used to provide a means of comparing changes in quantities or amounts.
Percent differentials express the relationship between some initial condition and another specified
The method of calculating percent differential involves the following:
Subtract the original value from the present value.
Divide by the original value.
Multiply by 100.
Add the percent symbol (%).
A tank initially contains 50 gallons of water. Five gallons are drained out. By what
percent is the amount of water in the tank reduced?
The difference between initial and final is given in the problem: 5 gallons.
0.1 x 100 = 10% Five gallons represents 10% of the original 50 gals that
were in the tank.