Question

Mai's fish tank has 17 liters of water in it. She plans to add 5 liters per minute until the tank has more than 47 liters. What are the possible numbers of minutes Mai could add water?

Use t for the number of minutes.
Write your answer as an inequality solved for .

Answer 1

7 minutes to have 47 liters.

Explanation:

47 > 17 + 5x

Solve for x...

47 > 17 + 5x

47 - 17 > 5x

30 > 5x

30/5 > x

7 > x

So it will take more than 7 minutes to have 47 liters.