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Math Help - Tsunami Problems

  1. #1
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    Tsunami Problems

    In the Pacifi Ocean, between 1992 and 1996 (inclusive), tere were 17 tsunamis which took a total of 1700 lives.

    A. What is the average number of tsunamis per year over this period ?

    B. How many lives per year were lost to tsunamis during this period ?

    Thanks, Chhoeuk
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by chhoeuk View Post
    In the Pacifi Ocean, between 1992 and 1996 (inclusive), tere were 17 tsunamis which took a total of 1700 lives.

    A. What is the average number of tsunamis per year over this period ?

    B. How many lives per year were lost to tsunamis during this period ?

    Thanks, Chhoeuk
    There are 5 years between 1992 and 1996 inclusive.

    A. Average tsunamis per year = total number of tsunamis/# of years
    = 17/5 = 3.4 tsunamis per year on average

    B. Lives per year lost = total number of lives lost/ # of years
    = 1700/5 = 340 lives lost per year


    Note: whenever you see the word "per," it means divide. somethingA per somethingB means somethingA/somethingB

    Other words to note: "sum" means add, "difference" means subtract, "of" or "product" means multiply.
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    Quote Originally Posted by chhoeuk View Post
    In the Pacifi Ocean, between 1992 and 1996 (inclusive), tere were 17 tsunamis which took a total of 1700 lives.

    A. What is the average number of tsunamis per year over this period ?
    number of years = 5, number of tsunamis = 17, average number per year = 17/5 = 3.4

    B. How many lives per year were lost to tsunamis during this period ?
    Average number of lives lost per tsunami = total number of lives lost/number of tsunamis = 17000/17 = 1000 per tsunami.

    Average number of tsunamis per year is 3.4, so the average number of lives lost is 1000*3.4 = 3400 lives per year.


    RonL
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    is up to his old tricks again! Jhevon's Avatar
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    Um, Captain, don't mean to step on your toes, but it was 1700 lives, not 17000. So it would be 100*3.4 = 340
    Last edited by Jhevon; February 25th 2007 at 03:25 AM.
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  5. #5
    Grand Panjandrum
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    Quote Originally Posted by Jhevon View Post
    Um, Captain, don't mean to step on your toes, but it was 1700 lives, not 17000. So it would be 100*3.4 = 340
    Oh hum.. If I said it was a deliberate error to make sure the original poster
    was listening, would you beleive that?

    RonL
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    is up to his old tricks again! Jhevon's Avatar
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    Silly question, of course i'd believe you captain!
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