To find out when the two machines will have filled the same number of cans, we can set up the equations based on the information given.
Let's denote \(x\) as the number of minutes that will pass.
For the first machine:
- It has already filled 92 cans and fills at a rate of 16 cans per minute.
- After \(x\) minutes, it will have filled \(92 + 16x\) cans.
For the second machine:
- It has already filled 104 cans and fills at a rate of 13 cans per minute.
- After \(x\) minutes, it will have filled \(104 + 13x\) cans.
We want to find out when these two amounts are equal: \[ 92 + 16x = 104 + 13x \]
Now we can solve this equation.
-
Start by moving the \(13x\) from the right side to the left side: \[ 92 + 16x - 13x = 104 \] \[ 92 + 3x = 104 \]
-
Next, subtract 92 from both sides: \[ 3x = 104 - 92 \] \[ 3x = 12 \]
-
Now, divide both sides by 3: \[ x = 4 \]
So, after 4 minutes, both machines will have filled the same number of cans.
Thus, the correct response is: \[ 92 + 16x = 104 + 13x; \quad x = 4 \]