If a population grew 1% every year, how long would it take before it doubles?
Less than 100 years, right?
Less than 100 years, right?
I need help with a math question
- Thread starter Omega
- Start date
And if you want to be real fancy you can also include the formula. I'd really appreciate that.
This isn't for school or a test or anything like that.
I'm in a debate right now with someone who claims an annual 1% increase would take a thousand years.
:help:
This isn't for school or a test or anything like that.
I'm in a debate right now with someone who claims an annual 1% increase would take a thousand years.
:help:
ok start at a population of 100,
(.01y)(100)=200 (solve for y)
I think thats how it is..... its 12.30am, im tired, i'll try helping you tommorow, something doesnt seem right with my equation....
btw i didnt look at wikipedia, i wanna see if i can do it without help.....
(.01y)(100)=200 (solve for y)
I think thats how it is..... its 12.30am, im tired, i'll try helping you tommorow, something doesnt seem right with my equation....
btw i didnt look at wikipedia, i wanna see if i can do it without help.....
Thanks for your help everybody.
I'm debating an engineer (very proficient in math) on another message board about how long it will take Earth's population to double at a sustained growth rate of 1%.
He claims "simple math" tells us that will take until at least the year 3000.
I pointed out to him that 1% is 1/100th (not 1/1000th) and then there's the factor of it being compounded like in interest.
He says I'm "over-simplifying it greatly" and cites all these complicated math concepts I've never heard of. I understand that our growth rate might slow down and our population might level-off, but still.
Oh well.
I'm debating an engineer (very proficient in math) on another message board about how long it will take Earth's population to double at a sustained growth rate of 1%.
He claims "simple math" tells us that will take until at least the year 3000.
I pointed out to him that 1% is 1/100th (not 1/1000th) and then there's the factor of it being compounded like in interest.
He says I'm "over-simplifying it greatly" and cites all these complicated math concepts I've never heard of. I understand that our growth rate might slow down and our population might level-off, but still.
Oh well.
Might want to remind him that all those cool concepts and formulas he learned only work when they're appropriate. Ypu can't use Pi to figure out the angles of a triangle. I'm completly stupid when it comes to math, and I'll do it the simple way. If the population increased EXACTLY 1% of the original amount every year, it would take 100 years to double. If you started with 100 people, that would mean 1 (1%) added annually, which would give you 200 in 100 years. Given that that doesn't compund I think the aforementioned 70 years would likely be right.
AquariumFish
still playing with wet spots
If you have
YEAR & COUNT
............ at twenty years you get about 20%
What do you think?
YEAR & COUNT
- 1 person
- 1.01 people
- 1.0201 people
- 1.030301 people
- 1.04060401
- 1.0510100501
- 1.061520150601
- 1.07213535210701
- 1.0828567056280801
- 1.093685272684360901
- 1.10462212541120451001
- 1.1156683466653165551101
- 1.126825030131969720661201
- 1.13809328043328941786781301
- 1.1494742132376223120464911401
- 1.160968955369998535166956051501
- 1.172578644923698520518625612016
- 1.1843044313729355057238118681362
- 1.1961474756866648607810499868175
- 1.2081089504435315093888604866857
............ at twenty years you get about 20%
What do you think?