A bookseller sold 'a' number of Geography textbooks at the rate of Rs. x per book, 'a + 2' number of History textbooks at the rate of Rs. (x + 2) per book and 'a - 2' number of Mathematics textbooks at the rate of Rs. (x - 2) per book. What is his total sale in Rs. ?
3x + 3a
3ax + 8
9ax
x^3 a^3
Sale from Geography → Rs. ax From History → ax + 2a + 2x + 4 From Maths → ax – 2a – 2x + 4 So, Total Sale is Rs. 3ax + 8.
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