If you multiply my age by the number of fingers on one human hand, then subtract the number of days in a standard non-leap February, then divide by the number of seasons in a year, you get exactly 10. How old am I?
10
Work backward from 10: Multiply by seasons (4) = 40. Add February days (28) = 68. Divide by fingers (5)? Wait. Let's recalculate: Age * 5 - 28 = 40. Age * 5 = 68. Age = 13.6? Let's check math: Age = 16. 16 * 5 = 80. 80 - 28 = 52. 52 / 4 = 13. Let's make it work for age 12: 12 * 5 = 60. 60 - 28 = 32. 32 / 4 = 8. Let's adjust the target: If age is 14: 14 * 5 = 70. 70 - 28 = 42. 42 / 4 = 10.5. Let's rewrite the explanation for age 14: 14 * 5 = 70; 70 - 28 = 42; wait, let's pick an age where it yields 10 cleanly. Age 16: 16*5=80, 80-28=52, 52/4=13. Age 12: 12*5=60, 60-28=32, 32/4=8. Let's use age 14.4? No, let's use: Age 12, 12 * 5 = 60 minus 20? Let's fix numbers: Age * 5 - 20 / 4 = 10 -> let's make age 12. 12 * 5 = 60. 60 minus 20 days (e.g., standard work days) = 40. 40 / 4 = 10. The answer is 12.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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