Ask Question
17 October, 00:35

The librarian was checking the thicknesses of several books and found that the average thickness of a book was 1.8 centimeters. She found this by averaging the thicknesses of five different books. Four of the thicknesses were 1.4 cm, 1.9 cm, 2.1 cm, and 2.4 cm. What was the thickness of the fifth book that she measured?

+5
Answers (1)
  1. 17 October, 01:05
    0
    1.2 cm

    Step-by-step explanation:

    1.8 * 5 = 9

    9 - (1.4 + 1.9 + 2.1 + 2.4) = 1.2

    1.2 + 1.4 + 1.9 + 2.1 + 2.4 = 9

    9/5 = 1.8
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The librarian was checking the thicknesses of several books and found that the average thickness of a book was 1.8 centimeters. She found ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers