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A textbook store sold a combined total of 255 sociology and physiology textbooks in a week. The number of sociology textbooks sold was two times the number of physiology textbooks sold. How many textbooks of each type were sold?

1 Answer

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Answer:

75 physiology Textbook was sold and 150 sociology textbook was sold

Explanation:

Let x represent textbook

2x + x = 225

⇒3x = 225


\sf \frac{\sout{3}x}{\sout{3}} = (225)/(3)

⇒x = 75

75 textbooks for physiology

To find How many textbook for sociology

Multiply 2 by the amount of physiology

⇒2 × 75

⇒150 sociology textbook

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