Multiple choice

A bookstore has a total stock of 25 books of grades 4, 5, 6 and 7. The table below shows the number of books of each grade. Find the number of books of grade 4. Grade 4 5 6 7 Frequency ? 6 9 6

  1. 3

  2. 4

  3. 5

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The total number of books is 25. Adding the known frequencies (6 + 9 + 6) gives 21. Subtracting this from the total (25 - 21) leaves 4 for grade 4.

AI explanation

The total stock of the books is given as 25. The sum of the frequencies for grades 5, 6 and 7 is 6 + 9 + 6 = 21 books. The number of books for grade 4 is the difference between the total stock and this sum, which is 25 - 21 = 4 books. The result is 4.

Keep practicing — related questions