The annual returns will be calculated as follows:
a] Here we use the formula:
A=p(1+r/100)^n
A=future amount
p=principle
r=returns
n=time
We are given:
A=500, p=400, t=1
Plugging the values in the formula we obtain:
500=400(1+r)^1
simplifying and solving for r:
1.25=1+r
thus
r=1.25-1
r=0.25~25%
b] Using the formula above:
A=p(1+r/100)^n
A=2500+100=2600, p=2000, n=1 year
plugging the values in the equation we obtain:
2600=2000(1+r)^1
simplifying and solving for r we obtain:
2600/2000=1+r
1.3=1+r
hence
r=1.3-1
r=0.3~30%
1 more than 9 is 10.
That is because 10-9 = 1.
Wym their was no growth rate it lost 53,500 in those 15 years at a rate of about 3,566 a year
Answer:



And finally we can convert this into money like this:

So they spent every day approximately in total $ 4815291.6 dollars
Step-by-step explanation:
For this case we can convert the average power into Kw like this:

Now on average we know that one person use on average this power over 6.3 hours per day so then we have the following consumption rate:

And now we know the total population so then the total consumption per day would be:

And finally we can convert this into money like this:

So they spent every day approximately in total $ 4815291.6 dollars