Jen C.

asked • 02/09/14

need step by step instruction about how to solve this problem

from 1900 to 2000, the population rate of seattle washington grew at a rate of about 4700 people to a population of about 565,000. Baltimore maryland decreased at a rate of about 8400 people per year to a population of about 650000. If these rates continue in about how many years will seattle and baltimore have the same population

Vivian L.

Hi Jen;
I worked on the premise that this was 1990-2000 because continuous growth over a 100-period is extremely unlikely.  You indicated 1900-2000.
Please let me know if I am mistaken.
 
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02/09/14

4 Answers By Expert Tutors

By:

Charles G.

Arthur,
 
You are the only one that I saw here that didn't read additional information into this problem.  You have Seattle with a population of 565,000 adding 4,700 people per year.  Baltimore starts with a population of 650,000 losing 8,400 people per year. You did this exactly as it was stated.  Keep it simple is exactly what you did!
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02/17/14

Arthur D.

tutor
Thank you Charles.
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02/17/14

Steve S.

Arthur, your answer doesn't say when the 6.5 years is measured from. It's measured from 2000.
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02/17/14

Arthur D.

tutor
Hi Steve, I agree, putting the year down would have been more info for the student, but I only saw "in about how many years". Who knows, the problem might have asked for the date when the populations would be the same. Sometimes we don't always get all of the information in the problem.
 
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02/18/14

Steve S.

"from [during] 1900 to 2000, the population rate of seattle washington grew at a rate of about 4700 people to a population of about 565,000 [in 2000]." "If these rates continue [from 2000] in about how many years [when] will seattle and baltimore have the same population."
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02/18/14

Vivian L. answered • 02/09/14

Tutor
3 (1)

Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACH

Charles G.

Vivan,
 
You read far too much into the problem. Please look at Arthur D. 
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02/17/14

Parviz F. answered • 02/09/14

Tutor
4.8 (4)

Mathematics professor at Community Colleges

Charles G.

Parviz,
 
The whole year thing is irrelevant! Just start with Seattle having a population of 565,000 and increasing by 4,700 annually and Baltimore starting at 650,000 and decreasing at a rate of 8,400 annually. Look at Arthur D.'s explanation.
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02/17/14

Steve S. answered • 02/09/14

Tutor
5 (3)

Tutoring in Precalculus, Trig, and Differential Calculus

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