Final answer:
The hourly rates for loading and unloading and packing and unpacking are $70 and $55, respectively.
Step-by-step explanation:
To solve this problem, we need to set up a system of equations based on the given information. Let's denote the hourly rate for loading and unloading as 'L' and the hourly rate for packing and unpacking as 'P'.
From the first scenario, we know that 8L + 6P = 890.
From the second scenario, we know that 5L + 3P = 515.
Using these equations, we can solve for the values of 'L' and 'P' to find the company's hourly rates.
Multiplying the second equation by 2, we get 10L + 6P = 1030.
Subtracting the revised second equation from the first equation, we have 8L + 6P - (10L + 6P) = 890 - 1030.
Simplifying, we get -2L = -140. Dividing both sides by -2, we find that L = 70.
Substituting this value back into the second equation, we can solve for P: 5(70) + 3P = 515.
Simplifying, we get 350 + 3P = 515. Subtracting 350 from both sides, we have 3P = 165.
Dividing both sides by 3, we find that P = 55.
Therefore, the company's hourly rates are $70 for loading and unloading and $55 for packing and unpacking.