QUESTION

CSAT

Hard

Reasoning

Prelims 2018

A bookseller sold 'a' number of Geography textbooks at the rate of Rs. xx per book, 'a+2a + 2' number of History textbooks at the rate of Rs. (x+2)(x + 2) per book and 'a2a - 2' number of Mathematics textbooks at the rate of Rs. (x2)(x - 2) per book. What is his total sale in Rs. ?

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Explanation

Sale from Geography = Rs. axax

Sale from History = Rs. ax+2a+2x+4ax + 2a + 2x + 4

Sale from Maths = Rs. ax2a2x+4ax - 2a - 2x + 4

Therefore, Total Sale = Rs. 3ax+83ax + 8.

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