Chapter 0.6, Problem 31E

To determine

To calculate: The number of hamsters in a pet store that has 40 animals.

Answer to Problem 31E

The number of hamsters in a pet store that has 40 animals are $6$ .

Explanation of Solution

Given information:

A pet store has 40 animals and $15\%$ of the animals are hamsters.

Formula used:

Percent proportion is ratio of amount and base is same as percent to 100.

To convert percentage to fraction divide the number by 100.

Calculation:

It is provided that a pet store has 40 animals and $15\%$ of the animals are hamsters.

Let x number of hamsters are there.

Recall that percent proportion is ratio of amount and base is same as percent to 100.

According to the question,

  $\begin{array}{c}15\%\times 40=x\\ \frac{15}{100}\times 40=x\\ 6=x\end{array}$

Therefore, numbers of hamsters are 6.

Thus, the number of hamsters in a pet store that has 40 animals are $6$ .