Mori is building a cage for his pet guinea pig. The bottom is 8 inches
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After 5 years the amount in the account will be $ 487.
<u>Step-by-step explanation:</u>
Compound Interest, A =
Where A denotes the investment's future value
P is the Principal amount = $ 400.00
r is the rate of interest annually in decimals = 0.04
n is the no. of times the interest is compounded per unit time, t = 1
t - the number of years or days or months the amount is invested = 5 years
Now we have to plug in those values in the above formula as,
A =
= 400(1+ 0.04)⁵
= 400(1.04)⁵
= 486.66 ≈ $ 487
Answer
Find out how much money did she start with.
To proof
let us assume that the money she had be x.
As given
woman spent two thirds of her money
Money she had after spent two thirds of her money = Total money - money spent
As given she lost two thirds the remainder
we get
Money she had after lost two thirds the remainder = Money she had after spent two thirds of her money - she lost two thirds the remainder
As given
she had $4 left
thus
x = $36
she start with $36.
Hence proved