This should be divided by 100 So 75 really means 75 100 And 100 is 100 100 or exactly 1 100 of any number is just the number unchanged. Simple interest is worked out by calculating the percentage amount and multiplying it by the number of periods that the. Most calculations involving percentages involve using the percent in its decimal form.
So 03 03 100 30.
So 40 would be 40 divided by 100 or40. The Corbettmaths video tutorial on increasingdecreasing by a percentage. Knowing how to find and use percentages is an important skill. So 30 30100 310 03 To change a decimal into a percentage multiply by 100.