Question

The table shows the number of children in each of the 35 families surveyed. Which of the following workings to calculate the percentage of families with more than 3 children is correct?
$\begin{array}{cc}\text{Number of Children}& \text{Tally}\\ 2& ||||\\ 3& \text{/}||||\text{/}||||\\ 4& \text{/}||||||\\ 5& \text{/}||||||||\\ 6& \text{/}|||||\end{array}$

• A. $\frac{10}{35}\times 100\%$
• B. $\frac{14}{35}\times 100\%$
• C. $\frac{21}{35}\times 100\%$
• D. $\frac{31}{35}\times 100\%$

Answer 1

The correct option is C

$\frac{21}{35}\times 100\%$

Total No of families with children =35
No. of families with more than 3 children = 21

$\therefore$ Required percentage =$\frac{21}{35}\times 100\%$