Question

Maria did a survey where she asked all the children in her school to name their favourite pet. The results are shown in the pie chart.

If 720 children said their favourite pet was a Dog, how many children said their favourite pet was a Rabbit?

• A. 138
• B. 100
• C. 140
• D. 150

Answer 1

The correct option is C

140

On observing the graph, we see that 36% of total children said their favourite pet is dog.

Let, the total number of children be $x$.
$\therefore$ 36% of $x$ = 720

$\Rightarrow x=\frac{720\times 100}{36}=2000$

$\therefore$ Total number of children = 2000

The number of children who told rabbit is their favourite is , 7% of 2000

$\Rightarrow \frac{7\times 2000}{100}=140$

$\therefore$ Total number of children whose favourite pet is Rabbit = 140