James went to the store to return a defective $45 tape recorder for a refund. At the same time, he bought some batteries for $3 per package. If he received $33 dollars of his refund, how many packages of batteries did he buy?

James bought 4 packages of batteries if James went to the store to return a defective $45 tape recorder for a refund. At the same time, he bought some batteries for $3 per package.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

James went to the store to return a defective $45 tape recorder for a refund. At the same time, he bought some batteries for $3 per package

Let he buy x number of packages of batteries.

The cost of packages of batteries = 3x

The linear equation one variable can be framed:

33 + 3x = 45

3x = 45 - 33

3x = 12

x = 4

Thus, James bought 4 packages of batteries if James went to the store to return a defective $45 tape recorder for a refund. At the same time, he bought some batteries for $3 per package.

Learn more about the linear equation here:

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