If you take my age, subtract 8, multiply by 3, and then add 12, you get my exact age multiplied by 2. How old am I?
24
Let age be A. 3(A - 8) + 12 = 2A. 3A - 24 + 12 = 2A. 3A - 12 = 2A. A = 12? Wait. Let's check: 3(24-8) + 12 = 3(16)+12 = 48+12 = 60. And 2 * 24 = 48. Let's re-verify equation: 3(A-8)+12 = 2A -> 3A - 24 + 12 = 2A -> 3A - 12 = 2A -> A = 12? Wait. If A=12: 12-8=4; 4*3=12; 12+12=24. 2*12=24. Ah, 12 is correct, let me write the explanation for 12.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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