The Problem description is not precise, could you provide clear problem solving strategy.
If 2s > 8 and 3t < 9, which of the following could be the value of s-t?
B. I only
C. II only
D. III only
E. II and III
we have two equations..
2s > 8 .. s>4, so' s' can be 4.1,5,5.05 etc
and 3t < 9 .. t<3 so 't'can be 2.9999, 2,-1 etc..
if we take the lowest possible difference between s and t, we will take lowest value of s, which is just above 4 and highest value of t, which is just lower to 3..
s-t >4.0000000001 -2.999999999 .... so s-t>1
therefore all values of -1,0,1 are not possible
ans none A
hope it helped