Question

Karen's fish tank has 18 liters of water in it. She plans to add 6 liters per minute until the tank has more than 66 liters. What are the possible numbers of minutes Karen could add water?Use : for the number of minutes.Write your answer as an inequality solved for t.

Answer 1

We have the next information given:

-Karen's fish tank has 18 liters of water in it.

-She plans to add 6 liters per minute until the tank has more than 66 liters.

We can write more than using the next inequality symbol ">".

in this case, we need to use the t variable and it depends on the liters per minute.

Hence, we can write the next expression:

`6t+18>66`

We add 18 liters because the fish tank has already this amount of water in it.

Now, we need to solve for t:

`\begin{gathered} 6t>66-18 \\ 6t>48 \\ t>(48)/(6) \\ t>8 \end{gathered}`

Hence, Karen could add water for more than 8 minutes to get more than 66 liters.

The inequality answer is t>8.