SOLUTION: If each of them tells 1 person, and then everybody tells exactly 1 other person, and so on, how long will it take until all 450 students in the school hear the rumor? Assume that t
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Question 1029066: If each of them tells 1 person, and then everybody tells exactly 1 other person, and so on, how long will it take until all 450 students in the school hear the rumor? Assume that the rate for telling the next person is 1 hour. That is, initially Jack and Jill know; after 1 hour, 2 more people know; after 2 hours, 2 more people know Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! The total number of people after each hour is:
(0)
(1)
(2)
(3)
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I notice that at hour number ,
the total that hear rumor is
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I can say:
All 450 students hear rumor after
6 hrs and 49 min
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check:
error due to rounding off
You might want a 2nd opinion on this
