SOLUTION: How many positive integers x are there such that 3x has three digits and 4x has four digits?

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Question 238959: How many positive integers x are there such that 3x has three digits and 4x has four digits?
Answer by scott8148(6628) About Me  (Show Source):
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99 > 3x > 1000

33 > x > 333 1/3 ___ 34 to 333


999 > 4x > 10000

249 3/4 > x > 2500 ___ 250 to 2500


250 to 333 ___ 84 integers