Middle School

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Mr. Lim bought some notebooks that cost $5 each and some markers that cost $2 each. The number of markers was 3 more than 2 times the number of notebooks. Mr. Lim paid $42 for the notebooks and markers. How many notebooks did Mr. Lim buy?​

Answer :

Answer: 4 Notebooks

Step-by-step explanation:

The number of notebooks is x, the number of markers is 2x+3.

Since the price per notebook is $5 we can write it as 5x, And the price per marker is $2, we can write that as 4x+6

5x+4x+6=42

9x=36

x=4

so he bought 4 notebooks and 11 markers.

CHECK: 4*5=20 and 11*2=22 20+22=42

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Rewritten by : Barada

Mr. lim buy 4 notebooks.

What is Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

Cost of one Notebook = $5

Cost of one Marker = $2.

let the number of notebooks be x.

So, the number of markers = 2x + 3

Thus, he spend total on both $42.

5x + 2(2x+ 3)= 42

5x + 4x + 6 = 42

9x = 36

x= 4

Hence, Mr. lim buy 4 notebooks.

Learn more about Equation here:

https://brainly.com/question/29657983

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