-Microconomics

Leonard McCoy is a manager at a coffee shop, and he has to decide how many workers to hire. One worker can make 30 drinks that sell for $2.50 on average in one hour. A second worker can make another 25 drinks in one hour. The marginal benefit of each additional worker decreases by five drinks, with each additional hire. Given that workers are paid $15 per hour and have eight-hour shifts, how many employees should Leonard hire for each hour?