Printing of logos on T-shirts is done in batches. On average, 6 designers per hour need to use the printing machine and their instance is respected at Rs.50 per hour. A verdict needs to be made on whether to lease a HP or IBM thermal printers. The HP printer can complete an average job in 5 minutes and has a leasing charge of Rs.16.00 per hour, whereas the IBM

printer will take 8 minutes but has a leasing charge of Rs.12.00 per hour. Which printer is

most cost efficient?