Multiple choice general knowledge math & puzzles

How many times of 13 X 16 X 17 is 8 X 51 X 52?

  1. 3

  2. 4

  3. 6

  4. 12
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ratio calculation shows that 8 X 51 X 52 is 6 times 13 X 16 X 17. We can simplify: 51 = 3 X 17, so 8 X 51 X 52 = 8 X 3 X 17 X 52. Similarly, 52 = 4 X 13, so this equals 8 X 3 X 17 X 4 X 13. The original is 13 X 16 X 17 = 13 X 16 X 17. Canceling common terms (13 X 17), we get 8 X 3 X 4 = 96 for the first expression and 16 for the second, giving a ratio of 96/16 = 6.

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