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A textbook store sold a combined total of 268 physics and sociology textbooks in a week. The number of physics textbooks sold was three times the number of sociology textbooks sold.

How many textbooks of each type were sold?

Answer :

Number of sociology textbooks = 67

And, Number of physics textbooks = 201

We have to given that,

Total number of physics and sociology textbooks sold in a week is, 268

And, The number of physics textbooks sold was three times the number of sociology textbooks sold.

Let us assume that,

Number of sociology textbooks = x

So, Number of physics textbooks = 3x

Then,

x + 3x = 268

Solve for x,

4x = 268

Divide by 4,

x = 268/4

x = 67

Therefore, Number of sociology textbooks = 67

So, Number of physics textbooks = 3 x 67 = 201

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