Mail-order pharmacies typically use machines to count pills and dispense them into bottles, particularly pills that are prescribed on a regular basis by physicians, such as blood pressure medicine, cholesterol medicine, and diabetes medicine. suppose a pharmacy has two pill counters that work in tandem (together). the batch of blood pressure pills in 1 hour, and the second counter can finish the same batch in 40 minutes. how many minutes should it take to finish a typical batch if both pill counters work together?

a) 18
b) 24
c) 36
d) 50