Question

According to this information, what was the percentage of carbon-14 remaining in an object after 55 years?

Answer 1

Option A that is
`99.34` is the correct choice.

Explanation:

To find what percentage of carbon-14 is still remaining after
`55` years.

We have to pull the equation and instead of
`t` we will put the years in numbers that is
`t=55`

Lets see the equation.

`C(t)=100.e^(-0.000121(t))`

Now to find the carbon-14 percentage.

Putting the value of
`t` in years.

So

`C(t)=100.e^(-0.000121(t))` and
`e^(-0.000121(55))=0.9934`

`C(t)=100* 0.9934 =99.34`

As mentioned that the function is already framed to find the percentage we need not to convert it or multiply with
`100`.

So the percentage of C-14 remaining after
`55` years is
`99.34`

Option A is the correct choice.