4. Total marks obtained by P, Q, R and S in Mathematics is 360. How many marks did P secure in Mathematics?
I. P secured one-third marks of the total of Q, Rand S.
II. Average marks obtained by Q and R are 20 more than that secured by S.
From statement I, P = 1/3(Q+R+S) and we know that, P + Q + R + S = 360
Hence, the marks of P can be determined.
Therefore, statement I alone is sufficient. from statement II, we cannot say anything.
From statement I, P = 1/3(Q+R+S) and we know that, P + Q + R + S = 360
Hence, the marks of P can be determined.
Therefore, statement I alone is sufficient. from statement II, we cannot say anything.