Question

According to one study, an average payout for slots machines is 90 cents on each dollar. What is the percent return on every dollar spent in playing slots?The percent return on every dollakspent in playing slots is %.

Answer 1

90 %

Explanation

we can easily solve this by using a rule of three

let

x represents the percentage

also, we need to know

$1\text{ dollar = 100 cents}$

so

$\begin{gathered} if \\ 100\text{ cents}\rightarrow100\text{ \%} \\ \text{then} \\ 90\text{ cents}\rightarrow x \end{gathered}$

so, we can make a proportion

$\frac{100\text{ cents}}{100\text{ \%}}=\frac{90\text{ cents}}{x}$

finally,solve for x

$\begin{gathered} \frac{100\text{ cents}}{100\text{ \%}}=\frac{90\text{ cents}}{x} \\ \frac{100}{100}=\frac{90}{x} \\ 100x=90\cdot100 \\ x=\frac{90\cdot100}{100} \\ x=90\text{ \%} \end{gathered}$

therefore, the return on every dollar is

90 %

I hope this helps you