Question

Three students that share a townhouse find that their electric bill for October is $5.29 less than the September bill. The total of both bills is $155.93, and each bill is split evenly among the roommates how much they each owe in September?

Answer 1

We will have the following:

From the problem we will have the following expressions:

`\begin{gathered} S=x \\ O=x-5.29 \\ S+O=155.93 \\ 2x-5.29=155.93 \end{gathered}`

Now, from this we determine the value for the bill on september:

`\Rightarrow2x=161.22\Rightarrow x=80.61`

Now, since there are 3 people, the payment for each one is:

`(80.61)/(3)=26.87`

So, the payment for each one is $26.87 in September.