Maths-

General

Easy

Question

At what rate percent per annum will a sum of money double itself in 10 years?

hint Hint:

Use the formula of total amount and then find the rate of interest .

The correct answer is: 10 years.

Complete step by step solution:
Formula for total amount = A = P + SI…(i)
where is the total amount, is the principal amount and is simple interest .
Here, A = 2P and $S I equals fraction numerator P T R over denominator 100 end fraction$
where P is Principal amount, T is number of years and R is the rate of interest.
We have, T = 10 (given) and R = ?
On substituting the known values in (i), we have $2 P equals P plus fraction numerator P cross times 10 cross times R over denominator 100 end fraction$ .
Subtract P from both sides.
Then we have, $P equals fraction numerator P cross times 10 cross times R over denominator 100 end fraction$
On further simplifications, we have $R equals 10 straight percent sign$
At 10% per annum the sum amount will double itself in 10 years.

Find the solution of the system of equations.
$y equals x squared plus 6 x plus 9$
y = 3x

It is not necessary for every set of equation to have solutions. If you graph them and get not intersecting points, then they have no real solutions.

Find the solution of the system of equations.
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At what rate percent per annum will a sum of money double itself in 10 years?

Use the formula of total amount and then find the rate of interest .

The correct answer is: 10 years.

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Find the solution of the system of equations.
$y equals x squared plus 6 x plus 9$
y = 3x

Find the solution of the system of equations.
$y equals x squared plus 6 x plus 9$
y = 3x

Find the solution of the system of equations.
$y equals x squared minus 5 x minus 8$
$y equals negative 2 x minus 4$

Find the solution of the system of equations.
$y equals x squared minus 5 x minus 8$
$y equals negative 2 x minus 4$

Consider this simple bivariate data set.

a) Draw a scatter plot for the data.
b) Describe the correlation between x and y as positive or negative.
c) Describe the correlation between x and y as strong or weak.
d) Identify any outliers.

Consider this simple bivariate data set.

a) Draw a scatter plot for the data.
b) Describe the correlation between x and y as positive or negative.
c) Describe the correlation between x and y as strong or weak.
d) Identify any outliers.

Find the solution of the system of equations.
$y equals 6 x squared plus 3 x minus 11$
y = 3x - 5

Find the solution of the system of equations.
$y equals 6 x squared plus 3 x minus 11$
y = 3x - 5

Consider this simple bivariate data set.

a) Draw a scatter plot for the data.
b) Describe the correlation between x and y as positive or negative.
c) Describe the correlation between x and y as strong or weak.
d) Identify any outliers.

Consider this simple bivariate data set.

a) Draw a scatter plot for the data.
b) Describe the correlation between x and y as positive or negative.
c) Describe the correlation between x and y as strong or weak.
d) Identify any outliers.

Find the solution of the system of equations.
$y equals negative 2 x squared plus 6 x minus 7$
y = 13 - 2x

Find the solution of the system of equations.
$y equals negative 2 x squared plus 6 x minus 7$
y = 13 - 2x

Which sentence has the same meaning?
"It was nice of you to helps tie the boy's shoe”

Which sentence has the same meaning?
"It was nice of you to helps tie the boy's shoe”