I. Given : C.P = Rs. 300. It gives no information about S.P or % loss. ∴ I alone is not sufficient. II. Given : Loss = 25 % of S.P Since S.P is not given, loss can’t be determined. ∴ II alone is not sufficient. I & II. C.P – S.P = 25% of SP=
SP
4
C.P=
5
4
S.P⇒S.P=
4
5
×300=Rs.240 ⇒ Loss =300–240=Rs.60. ∴ I & II together are sufficient.