Question

each of the 15 student council members of Blakemore Elementary School is responsable for telling exactly 2 other students about the upcoming school pep assembly. Each of those 2 is then responsable for telling 2 other students. It takes 15 minutes for each round of stundents to be told. How many minutes will take for 1,000 students to recive the information about the pep assembly ?

Answer 1

end of round1 -- 30 students -- 15 minutes

round2 -- 60 -- 30 min
round3 -- 120 -- 45
round4 -- 240 -- 60
round5 -- 480 -- 75
ruond6 -- 960 -- 90
round7 --1920 -- 105

what do you think?

Answer 2

ty