Chapter 6.1, Problem 11GP

To determine

Find the percentage of the math tests for Bs.

Answer to Problem 11GP

The percentage for Bs is $39.2\%$ .

Explanation of Solution

Given:

It is given in the question that there are $120$ math tests in which $47$ were the Bs.

Concept Used:

In this, use the concept of percent proportion such that the ratio of given two number will equal to the ratio of $p/100$ .

Calculation:

Here,

By percent proportion, $\frac{47}{120}=\frac{p}{100}$ will the expression.

  $\begin{array}{l}\frac{47}{120}=\frac{p}{100}\\ p\cdot 120=47\cdot 100\\ p=\frac{47\times 100}{120}\\ p=\frac{4700}{120}\\ p\approx 39.2\end{array}$

Conclusion:

The percentage is $39.2\%$ .