if K is a positive 3-digit integer, what is the hundreds digit of K?
st1-the hundreds digit of K+150 is 4.
st2-the tens digit of K+25 is 7.
(1) K is between 250 and 349
(2) K is x7x
From (1) and (2) K is 27x
We know that K+25
is x7y from statement 2. If we put the two statements together, K could be 250 (so K + 25 is 275), but K could also be 345 (so K + 25 is 370). The answer's E.