To find out when both machines will empty their cans of soap, we can set up equations for the time each machine takes to fill all the cans.
Let \( t \) represent the time in minutes.
For the first machine:
- Initial number of cans: 92
- Filling rate: 16 cans per minute
The equation for the first machine can be expressed as: \[ 92 - 16t = 0 \]
For the second machine:
- Initial number of cans: 104
- Filling rate: 13 cans per minute
The equation for the second machine can be expressed as: \[ 104 - 13t = 0 \]
Now we can solve each equation for \( t \):
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For the first machine: \[ 92 - 16t = 0 \ 16t = 92 \ t = \frac{92}{16} = 5.75 \text{ minutes} \]
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For the second machine: \[ 104 - 13t = 0 \ 13t = 104 \ t = \frac{104}{13} = 8 \text{ minutes} \]
Thus, the two machines will empty their cans of soap in 5.75 minutes and 8 minutes, respectively.