Question

What is four out of five as a percentage, if someone bought a pizza and it has ten pieces. What is the percentage if you eat four pieces?

Answer 1

Hint: As we know that the above given question is a word problem. A problem is a mathematical question written as one sentence or more describing a real life scenario where that problem needs to be solved by the way of mathematical calculation. We can solve the given problem by first converting them into numbers and then find the percentage.

Complete step by step solution:
We need to first understand the requirement of the question which is the percentage.
The first part says that four out of five i.e. $4$ out of $5$ and we have to find the percentage of it.
Part 1:
We can write it as $\dfrac{4}{5}$, it gives us a value of $0.08$. Now we have to find the percentage of it, so we can write $0.08 \times 100 = 80\% $.

Part 2:
Now in the second part we have a pizza with $10$ slices, so if we eat four out of it we can write $\dfrac{4}{{10}}$.
To find the percentage we can write it as $\dfrac{4}{{10}} \times 100 = 40\% $.

Therefore, four out of five as a percentage is 80% and the percentage of pizza pieces ate is 40%.

Note:
We should always be careful what the question is asking i.e the percentage of two different items, not all together as one. Based on the requirement and by observing all the necessary information that is already available in the question we gather the information and then create an equation or by unitary method whichever is applicable, then we solve the problem and then verify the answer by putting the value in the problem and see whether we get the same answer or not.