To determine when the two machines will have filled the same number of cans of soup, we can start by setting up the equations based on their rates.
Let \( x \) represent the number of minutes that have passed.
The first machine starts with 92 cans and fills at a rate of 16 cans per minute, so after \( x \) minutes, it will have filled: \[ 92 + 16x \]
The second machine starts with 104 cans and fills at a rate of 13 cans per minute, so after \( x \) minutes, it will have filled: \[ 104 + 13x \]
We want to find the point at which both machines have filled the same number of cans: \[ 92 + 16x = 104 + 13x \]
Now, we will solve for \( x \).
-
Subtract \( 13x \) from both sides: \[ 92 + 16x - 13x = 104 \] \[ 92 + 3x = 104 \]
-
Subtract 92 from both sides: \[ 3x = 104 - 92 \] \[ 3x = 12 \]
-
Divide both sides by 3: \[ x = 4 \]
So the two machines will have filled the same number of cans after 4 minutes.
The correct answer choice is: 104 + 16x = 92 + 13x ; x = 4 ( which was repeated in the options)