Question

Suppose the population of a town is 3,400 in 2000. The population decreases at a rate of 2% every 20 years. What will be the projected population in 2040? Round your answer to the nearest whole number.

Answer 1

multiply 3400*.02
multiply the answer by 2
then subtract it from 3400

Answer 2

subtract what from 3400?

Answer 3

ok multiply 3400*.02

Answer 4

tell me what you get as the answer and then I will tell you what to do next

Answer 5

3400*.02=68

Answer 6

ok good now multiply 68 by 2 because it is 2% for every 20 yrs but they need it for 40 yrs

Answer 7

are you still there @onelove26

Answer 8

okay I got 136

Answer 9

ok now subtract 3400 - 136 for the answer

Answer 10

I got 3,264

Answer 11

But it wouldn't be 68 for the second population decrease because it is 2% per 20 years. The difference is small but would affect the answer.

Answer 12

really? @wolf1728 how would you go about getting the answer then?

Answer 13

I'm back --- ^&(&^&%$$# Open Study
Okay population in 2020 = 3400 - (3400*.02) = 3,314

Population in 2040
3,314 -(3,314 * .02) = 3,248

Answer 14

yea I noticed I messed up on that step

Answer 15

So, for 2040 you deduct a population of 66 and not 68

Answer 16

ohhh

Answer 17

Hmm seems I messed up my calculations I think the answer is 3400 - 68 -66 which equals 3,266

Answer 18

where did you mess that up?

Answer 19

at subtraction

Answer 20

Originally I typed the answer as 3,248

Answer 21

Oh geez I'll have to rethink this
population in 2020 =
3,400- (.02 * 3400)=
3,400 - 3,332

Answer 22

Population in 2040 =
2020 population minus 2%
= 3,332 - (3,332 -.02*3,332) =
3,332 - 66.64 =
3,332 -67 = 3,247

Answer 23

Yes, it is a difference of 1 person - but the answer is correct.
A differece of 1 is not mush right?
Let's suppose you go to the bank and ask them to change a ten dollar bill and they give you 9 one dollar bills? Heck it's only a difference of one right?

Answer 24

Thanks for the medal!!