Could someone please double check me?

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A Developer works 40 hours per week at $30 per hour.

He or she earns : 40 hours x $30.00 per hour = $1200.00 - per week.

The four developers earn : 40 hours x $1200.00 = $4800.00 - per week.
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The Manager works 40 hours per week at a rate of: $50.00 per hour.

He or she earns: 40 hours x $50.00 per hour = $2000.00 - per week.
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Therefore, the weekly payroll is: $6800.00
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The project budget is: $850,000.00
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Weeks I can Keep my resources with my given budget: $850,000.00 / $6500.00 = 130 WEEKS.

Do you have a typo here?

$850,000.00 / $6500.00 = 130

I assume you don't need to consider the cost of benefits in this budget.

1073741822

8530397654

To double-check your calculations, let's break it down step by step.

The Developer works 40 hours per week at $30 per hour. So, the weekly earnings for one developer can be calculated as follows:

40 hours x $30.00 per hour = $1200.00 per week

Since there are four developers, the total weekly earnings for all developers would be:

4 developers x $1200.00 per week = $4800.00 per week

Now let's calculate the Manager's weekly earnings. The Manager also works 40 hours per week but at a rate of $50.00 per hour. So, the Manager's weekly earnings can be found by:

40 hours x $50.00 per hour = $2000.00 per week

To calculate the total weekly payroll for the developers and the manager combined, you can simply add their individual weekly earnings:

$4800.00 (developers) + $2000.00 (manager) = $6800.00 per week

So, the weekly payroll is $6800.00. This is correct based on the given information.

Now let's move on to calculating the number of weeks you can keep your resources with your given budget.

The project budget is $850,000.00.

To find the number of weeks, divide the total budget by the weekly payroll:

$850,000.00 / $6800.00 = 125 weeks (approximately)

Therefore, considering the given information, you can keep your resources for about 125 weeks, not 130 weeks as mentioned in your statement.

By following these calculations, you can double-check if you have made any errors in your original calculations.