Multiple choice

A book store has a total stock of 30 books of KS1, KS2, KS3 and KS4. The table shows the number of books of each year. Find the number of books of KS1. Grade KS1 KS2 KS3 KS4 Frequency ? 9 10 5

  1. 8

  2. 4

  3. 6

  4. 3
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C Correct answer
Explanation

Total books = 30. KS2=9, KS3=10, KS4=5. Sum = 9+10+5 = 24. KS1 = 30 - 24 = 6.

AI explanation

The total stock of books is 30, and the frequencies for KS2, KS3 and KS4 sum to 9 + 10 + 5 = 24 books. By subtracting this sum from the total stock, we find the number of KS1 books. The calculation is 30 - 24 = 6 books. The result is 6.

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