Question 18
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, R and S.
(II) Average marks obtained by Q and R are 20 more than that secured by S.
Solution
From statement 1, 3p = q + r + s
we know that p + q + r + s = 360
=>p + 3p = 360
=> p = 90
Statement 2 gives no relation of p with q, r and s.
$$\therefore\ $$ Statement I alone is sufficient to answer the question.
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