Home > Math Group > Question and Answer

Math Group

Question:

kappesser
kappesser
Student
High School - 12th Grade

AN 8% INCREASE IN POPULATION EQUALS 1998 PEOPLE SO  WHAT WAS PREVIOUSE POPULATION? 

I KNOW THE ANSWER IS 1850, BUT I NEED TO SEE HOW THEY GOT THIS ANSWER

Rate question:

Posted by kappesser on Thursday February 26, 2009 at 9:36 AM and tagged with math, word problem.

Answers:


  1. kmieciakp Teacher
    High School - 12th Grade

    Just write what the sentence is asking for in math language: what number when increased by 8% of itself is 1998.

    So for what number, write x.  Then for increased by 8% of itself, that's plus +, eight percent of x, so 0.08x, so write + 0.08x.  Finally, equals 1998 is of course = 1998.

    so put it together, and you have

    x + 0.08x = 1998 --then just solve for x:

    1.08x=1998

    x= 1998 / 1.08

    x= 1850

    Rate answer:

    Posted by kmieciakp on Thursday February 26, 2009 at 11:00 AM