A textbook store sold a combined total of 256 sociology and blology textbooks in a week. The number of sociology textbooks sold was three times the number of
blology textbooks sold. How many textbooks of each type were sold?
Number of sociology textbooks sold: ?.
Number of biology textbooks sold: ?.

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maheshpatelvVT maheshpatelvVT · Answer 1 · 2022-08-25T19:29:22+02:00

The number of sociology textbooks sold is 192, and the number of biology textbooks sold is 64.

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.

It is given that:

A textbook store sold a combined total of 256 sociology and biology textbooks in a week.

Let x be the number of sociology textbooks sold

Let y be the number of biology textbooks sold

x + y = 256

x = 3y

Using substitution method:

3y + y = 256

4y = 256

y = 256/4

y = 64

x = 192

Thus, the number of sociology textbooks sold is 192, and the number of biology textbooks sold is 64.

Learn more about the linear equation here:

brainly.com/question/11897796

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