A percentage is a part of one hundred. If we choose packs out of , this is written as %, which is the same as
We see percentages very often. I scored % in my Maths test, prices of cars decreased by %, there is an increase of % in the prices of milk and so on.
To find % of a number, we do the number.
Find % of .
% of .
Find % of .
Notice the in the denominator because
Calculate % of .
So, % of .
% of a population were over 9 years old. How many were over 9 years old? When the population of the country was million.
In a sale, all prices have been decreased by %. Find the new price of a toy which costs .
So the new price of the toy is .
When answering questions on percentages, we should read the question carefully. Consider the next few examples.
During a sale, all prices have decreased by %. Find the price of a toy which costs .
We reason as follows; Since prices have gone down by %, this means that the represents %.
of a price
So the price of the toy was before the sale.
Due to Covid-19, prices of cars in a showroom have increase by %. David bought his new car for . What was the price of David’s car before the prices increased?
Here represents %, because the price is % higher.
So, of price
We can check that we are correct by calculating % of and find the price of the car due to the Covid-19 price increment.
So, the new price of the car
In 2020, income tax at the rate of %, was deducted from John, out of of £400. How much did John receive?
We can calculate % of and this would be John’s fee.
John received .
What percentage of is ?
We calculate % %
What percentage of is pence?
We should convert the figures into the same unit. We can either say pence or pence . We shall use .