If k is a positive integer, what is the tens digit of k ? (1) when (k + 150) is divided by 200, the remainder is 20. gmat
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K +150=200X+20
Where k and x are positive integers
On solving we get k= 200X-130
For any positive integral value of x the tens digit of k is 7
Hence 7 is the answer
Where k and x are positive integers
On solving we get k= 200X-130
For any positive integral value of x the tens digit of k is 7
Hence 7 is the answer
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