Consider the problem of adding n numbers. Assume that one person can add two numbers

in time tc. How long will a person take to add n numbers? (4 points)

Now assume that eight people are available for adding n numbers and that it is possible to divide the list

into 8. The eight people have their own pencils and paper (on which to perform additions), are equally

skilled, and can add two numbers in time tc. Furthermore, a person can pass on the result of an addition (in

the form of a single number) to the person sitting next to him or her in time tw. How long will it take in the

following scenarios?

(a) All eight people are sitting in a circle. (8 points)

(b) The eight people are sitting in al-to-all connected network. (8 points)

please answer part b