$$f$)$ CEO Benjamin Neve is considering adding a second teller$($who would work at the same rate as the$$ first$)$ to reduce the waiting time for customers. He assumes that this will cut the waiting time in half.

Part $8$

If a second teller is$$ added, the average time a customer spends in the queue$=.54\mathrm{.}54$ minutes$($round your response to two decimal$$ places$).$