A tank starts with 300 liters of water. It is being drained at a rate of 3 liters of water per minute. The variable t represents the time in minutes.

Question

Write an expression to represent the amount of water in the tank after t minutes.

Answer 1

To express the amount of water in the tank after \( t \) minutes, we start with the initial amount of water, which is 300 liters. Since the tank is being drained at a rate of 3 liters per minute, we need to subtract the total amount of water drained over \( t \) minutes from the initial amount.

The amount of water drained after \( t \) minutes is \( 3t \) liters. Therefore, the expression for the amount of water in the tank after \( t \) minutes is:

\[ \text{Amount of water} = 300 - 3t \]

So, the final expression representing the amount of water in the tank after \( t \) minutes is:

\[ 300 - 3t \]