You run a school in florida. fixed monthly cost is $5000 for rent and utilities, $3000 is spent in salaries and $500 in insurance. also each student adds up to $90 expense per month for stationary, food etc. you charge $1000 per month from every student. you are considering moving the school to another neighborhood where the rent and utilities will increase to $8000, salaries to $5000 and insurance to $1000 per month. variable cost per student will increase up to $150 per month. however, you can charge $1500 per student. at what point will you be indifferent between your current mode of operation and the new option?