Get the answer to "The solution of the proportion r8=2540"

High School
Algebra
Pre-Algebra
Ratios, rates, proportions

osnomu3

Answered question

2021-12-16

The solution of the proportion

\frac{r}{8} = \frac{25}{40}

Answer & Explanation

Karen Robbins

Beginner2021-12-17Added 49 answers

Calculation:
In order to solve the given equation

\frac{r}{8} = \frac{25}{40}

for the variable, isolate the variable term r on one side by performing some basic algebraic operations to get rid of the other numbers and terms associated with it.
Here to isolate r on both side, first multiply both sides by 8 and then multiply both sides by 40 and then simplify further as shown below,

\frac{r}{8} = \frac{25}{40}

\frac{r}{8} \cdot 8 = \frac{25}{40} \cdot 8

r = \frac{200}{40}

r = 5

Thus, the solution of the proportion is

r = 5

Dabanka4v

Beginner2021-12-18Added 36 answers

Step 1

\frac{r}{8} = \frac{25}{40}

Multiply both sides of the equation by 40, the least common multiple of 8, 40.

5 r = 25

Divide both sides by 5.

r = \frac{25}{5}

Divide 25 by 5 to get 5.

r = 5

nick1337

Expert2021-12-28Added 777 answers

For the equation
$\frac{r}{8} = \frac{25}{40}$
The cross product is
$r \times 40 = 8 \times 25$
Solving for r
$r = \frac{8 \times 25}{40}$
and reducing
$r = 5$

Do you have a similar question?

Recalculate according to your conditions!

New Questions in Pre-Algebra

Didn't find what you were looking for?