Answer:
(1) p - s = 244
(2) pt = 7,552
The amount after two deductions is p- (t%)p-s
we get p-s from (1) but we don't know p(t%) , which is insufficient
we get pt from (2) ,it means p(t%)=7552/100 . But we don't know p-s, it is insufficient.
combining the two data, we can get p- (t%)p-s. Therefore, the ans is C