Final answer:
The monthly premium for workers' compensation insurance at Shakespeare's Sandwich Shop is $309.15, calculated by dividing the monthly payroll by 100 and then multiplying by the base rate of $2.70.
Step-by-step explanation:
Jane Austen needs to calculate the monthly premium for her sandwich shop's workman's compensation insurance. To find this, she should use the given base rate of $2.70 per $100 of wages paid. Since her monthly payroll is $11,450, the calculation would be:
Premium = (Payroll / 100) * Rate
Premium = ($11,450 / 100) * $2.70
Premium = 114.5 * $2.70
Premium = $309.15
Therefore, the monthly premium for worker's compensation at Shakespeare's Sandwich Shop is $309.15.