Mathematics, 02.09.2019 14:00, shookie1993

Peter figures he can build the entire tree house by himself in 20 hours. he figures that each additional friend who him would improve the time by 10%. he created a table using the algebraic expression n – n(0.10), where n is the previous number of hours.
to the nearest tenth of an hour, how long will it take to build the tree house if 4 friends are ?
it will take
hours.

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Peter figures he can build the entire tree house by himself in 20 hours. he figures that each additi...