Question

How many liters of water will be in the tank after 20 minutes? You can substitute 20 minutes for t in the expression to solve.
Liters in the tank after t minutes:

300+(−3t)
After 20 minutes, there will be ? liters of water in the tank.

Answer 1

To find out how many liters of water will be in the tank after 20 minutes, you can substitute \( t = 20 \) into the expression \( 300 + (-3t) \).

So, substituting \( t \):

\[
300 + (-3 \times 20)
\]

Now, calculate it step by step:

1. Calculate \( -3 \times 20 \):
\[
-3 \times 20 = -60
\]

2. Now substitute back into the expression:
\[
300 + (-60) = 300 - 60 = 240
\]

Therefore, after 20 minutes, there will be **240 liters** of water in the tank.