If X is an integer and Y = 9x + 13, what is the greatest value of x for which Y is less than 100 ?
Solution
Correct Answer: Option D
We need to find out the maximum value of x for which (9x + 13) is less than 100 --> (9x + 13) < 100 --> 9x < (100 - 13) = 87 --> x < 87/9 = 9.(something) As x is an integer, maximum possible value of x is 9.
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