If you take my age, multiply it by 3, subtract 10, and then divide by 2, you get my father's age. My father is 40. How old am I?
30
Working backwards from father's age (40): multiply by 2 to get 80, add 10 to get 90, divide by 3 to get 30.
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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