Question

What percent of 80 is 10?

Answer 1

Hint: In the given question, we had been asked the percent of 80 is 10. Here, we have to find the percentage. To do that, we need just to apply the simple formula of percentage. The given number is multiplied by x% and equals to 10. Then, we need to find out the value of x i.e., percent.

Complete step-by-step answer:
Percent is defined as the ratio of given quantity to the whole and it is multiplied by 100.
We using the below formula:
\[\text{Percent=}\dfrac{\left( \text{Given Quantity} \right)}{\text{Whole}}\times 100\]
Generally, the percent is denoted by the symbol ‘%’.
Let us solve the given question.
To solve the given problem, we have to calculate
\[80\times x\%=10\]…………. (1) (as per the given question)
When we use the symbol , we are multiplying by x and dividing by 100.
 So, equation (1) becomes, we get
\[\Rightarrow 80\times \frac{x}{100}=10\]
Cross multiplying the above terms, we get
\[\Rightarrow 80\times x=10\times 100\]
Which equals to
\[\Rightarrow 80x=1000\]
By dividing, we get
\[\Rightarrow x=\dfrac{1000}{80}\]
Which then equals to
\[\therefore x=12.5\]
Therefore, \[12.5\%\]of 80 is 10.
Required answer is \[12.5\%\]

Note: We need to know the key words to frame a required equation with given conditions. Actually, the percent means out of 100, how much part does the given number occupy.so, to find out the quantity in percent, we need to multiply the given number by x/100.so, we just know the basic concept of percent. To express any number as a percent-fraction, decimal etc, we follow the same, simple rule that is ‘multiply the number by 100’ and we have a solution.