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a college student bought 11 books for fall classes. if the cost of his anatomy textbook was three times the mean cost of the other 10 books, then the cost of the anatomy textbook was what fraction of the total amound he paid for the 11 books?



Answer :

The fraction of the total amound he paid for the 11 books is 3/13.

What is a Fraction?

  • The components of a whole or group of items are represented by fractions.
  • A fraction consists of two components.
  • The numerator is the figure at the top of the line.
  • It details the number of equal portions that were taken from the total or collection.
  • The denominator is the figure that appears below the line.
  • It displays the total number of identical objects in a collection or the total number of equal sections the whole is divided into.

According to our question-

  • Let C be the overall price of the remaining 10 books: Average cost of them = C/10
  • (C/10) = (3/10)C
  • T cost = (3/10)C + C
  • (3/10)c + (10/10)C
  • 13/10 C
  • 3/10*13/10
  • 3/13

Hence , The fraction of the total amound he paid for the 11 books is 3/13.

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