Question

Nari says, “The sum of 10 and one-third of a number is 25.” She uses the bar model to write an equation to represent her statement.

Which equation can Nari write using the bar model?

Answer 1

It says the sum, which hints that the two numbers will be added

So we can start the equation with 10+(1/3n)

we are then told they add up to 25
So they will equal 25

So the equation is
10+(1/3n)=25

Answer 2

The equation which is used to by Nari to represent the bar model of statement is,

$10+\dfrac{1}{3}n=25$

How to write algebraic equation?

Algebraic equation are the equation which consist the variables, coefficients of variables and constants.

The algebraic expression used to represent the general problem in the mathematical way to solve them.

Steps to write down the simple algebraic equation-

• Identify all the factors of the expression.

• Assume a variable for the changing values.

• Put a coefficient for the variable, if there is any rate of change of variable.

• Use constant numbers for the fixed values.

Nari says, “The sum of 10 and one-third of a number is 25.”  This statement is need to change in the equation for.

Let suppose the unknown number discussed in the statement is n. Now we have to add number 10 in the one third of this number to make it equal to 25. Therefore, the equation will become as,

$10+\dfrac{1}{3}n=25$

Thus, the equation which is used to by Nari to represent the bar model of statement is,

$10+\dfrac{1}{3}n=25$

Learn more about the algebraic expression here;

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