A company conducted a survey to see whether its new toothpaste was more popular with children or adults. Of the adults surveyed, about [tex]$11 \%$[/tex] use the toothpaste. Compare this with the percentage of children who use the toothpaste.

\begin{tabular}{|c|c|c|c|}
\hline
& Use toothpaste & \begin{tabular}{c}
Do not use \\
toothpaste
\end{tabular} & Total \\
\hline
Children & 0.06 & 0.19 & 0.25 \\
\hline
Adults & 0.08 & 0.67 & 0.75 \\
\hline
Total & 0.14 & 0.86 & 1.0 \\
\hline
\end{tabular}

Select the true statement:

A. A greater percentage of children ( [tex]$24 \%$[/tex] ) use the toothpaste.

B. A greater percentage of children ( [tex]$40 \%$[/tex] ) use the toothpaste.

C. A smaller percentage of children ( [tex]$6 \%$[/tex] ) use the toothpaste.

D. A smaller percentage of children ( [tex]$8 \%$[/tex] ) use the toothpaste.



Answer :

Let's solve the problem step-by-step.

1. Identify the data given:
- The percentage of adults who use the toothpaste is [tex]\( 11 \% \)[/tex].
- For children:
[tex]\[ \text{Proportion of children who use the toothpaste} = 0.06 \][/tex]
[tex]\[ \text{Total proportion of children surveyed} = 0.25 \][/tex]

2. Calculate the percentage of children who use the toothpaste:
[tex]\[ \text{Percentage of children who use the toothpaste} = \left(\frac{0.06}{0.25}\right) \times 100 \][/tex]

3. Perform the division:
[tex]\[ \frac{0.06}{0.25} = 0.24 \][/tex]

4. Convert to a percentage:
[tex]\[ 0.24 \times 100 = 24 \% \][/tex]

5. Compare the calculated percentage with the given options:
- [tex]\(A. \text{A greater percentage of children ( } 24 \% \text{ ) use the toothpaste.}\)[/tex]
- [tex]\(B. \text{A greater percentage of children ( } 40 \% \text{ ) use the toothpaste.}\)[/tex]
- [tex]\(C. \text{A smaller percentage of children ( } 6 \% \text{ ) use the toothpaste.}\)[/tex]
- [tex]\(D. \text{A smaller percentage of children ( } 8 \% \text{ ) use the toothpaste.}\)[/tex]

From the calculations, we see that 24% of children use the toothpaste, which matches option A.

So, the true statement is:
A. A greater percentage of children ( 24 \% ) use the toothpaste.