Thread: 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

Originally Posted by chhoeuk

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.

Originally Posted by chhoeuk

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

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

Originally Posted by Jhevon

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

Silly question, of course i'd believe you captain!