Advanced Mathematics Primary 3 Data Analysis

The bar graph below shows the number of books borrowed from Queenstown library last month across four genres. The scale goes up in intervals of 10.\n\nFiction: 50 books\nNon-Fiction: 30 books\nComics: 70 books\nScience: 40 books\n\nHow many more books were borrowed from the two most popular genres combined than from the two least popular genres combined?

A 50
B 40
C 30
D 120
Show Worked Solution

Worked Solution

Step 1: Identify the two most popular genres (highest bars). Comics: 70 books Fiction: 50 books Combined total = 70 + 50 = 120 books Step 2: Identify the two least popular genres (lowest bars). Non-Fiction: 30 books Science: 40 books Combined total = 30 + 40 = 70 books Step 3: Find how many more the top two had than the bottom two. 120 − 70 = 50 books The two most popular genres had 50 more books borrowed than the two least popular genres.

Correct answer: 50

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