Double me, then multiply that result by four, and you will arrive at sixty-four. What number was I at the start?
8
If x is the number, doubling it gives 2x. Multiplying by 4 gives 8x. Setting 8x = 64 and dividing both sides by 8 yields x = 8.
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: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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