Quick Answer for Whats 20 of 80 = 16
3 method to solve Whats 20% of 80 – With Formula
Looking for how to solve the problem “What’s 20% of 80?” using various methods. Percentage calculations are essential in everyday life, from shopping discounts to financial investments.
Method 1: Using the Percentage Formula
The percentage formula is a fundamental approach to calculate percentages. It is given by:
Percentage = (Part / Whole) * 100
In our problem, we need to find 20% of 80, where 80 is the whole and 20 is the percentage we want to calculate.
Step 1: Convert the percentage to a decimal. To do this, divide the percentage by 100.
20% = 20/100 = 0.20
Step 2: Plug the values into the percentage formula:
Percentage = (0.20 * 80) = 16
Therefore, 20% of 80 is 16.
Method 2: Using Proportions
Proportions provide an alternative method to find percentages. In this approach, we set up a ratio between the known percentage and the unknown value.
Step 1: Set up a proportion:
20/100 = x/80
Step 2: Cross-multiply and solve for x:
20 * 80 = 100 * x
1600 = 100x
Step 3: Isolate x by dividing both sides by 100:
x = 1600/100
x = 16
Thus, 20% of 80 is 16.
Method 3: Shortcut Approach
For some common percentages, we can use shortcuts to find the result mentally.
Since 20% is equivalent to 1/5 (or 20/100 = 1/5), we can directly calculate it without using a calculator:
Step 1: Find 1/5 of 80:
(1/5) * 80 = 16
Hence, 20% of 80 is 16.
Real-Life Example:
Let’s say you’re shopping and come across a sale offering a 20% discount on a $80 shirt. Using the methods above, you can quickly determine that the discounted price would be $16 less, making the shirt cost only $64.
Calculating percentages is an essential skill, and there are various approaches to solve such problems. By using the percentage formula, proportions, or employing shortcuts, you can efficiently handle real-life situations involving percentages. Remembering these methods will not only assist you in everyday scenarios but also in more complex mathematical calculations.