Question

How do you find 42$\%$ of 80?

Answer 1

Hint: We first find the fraction form of 42$\%$ in the form of $\dfrac{42}{100}$. Then we multiply this fraction with 80 to find the final solution of the problem. We complete the multiplication and then division to find the integer value.

Complete answer:
For the given percentage 42$\%$ of 80, we first need to find the mathematical form.
We know for any arbitrary percentage value of a$\%$, we can write it as $\dfrac{a}{100}$. The percentage is to find the respective value out of 100. Therefore, 42$\%$ can be written as $\dfrac{42}{100}$.
Now we need to find the 42$\%$ of 80 which is equal to $250\times \dfrac{42}{100}$.
The multiplication gives $250\times 42=10500$.
We get $250\times \dfrac{42}{100}=\dfrac{10500}{100}$. Dividing with 100 we get $250\times \dfrac{42}{100}=105$
Therefore, 42$\%$ of 80 is 105.

Note:
The value of the fraction is actually the unitary value of 42 out of 100. Therefore, in percentage value we got 42 as the percentage. Percentage deals with the ratio out of 100. The ratio value for both fraction and percentage is the same.