Question
In an examination, a student who scores 20% of the
maximum marks fails by 30 marks. Another student who scores 32% of the maximum marks gets 18 marks more than the pass marks. Find the maximum marks and the pass marks.Solution
Let maximum marks = M Let pass marks = P First student: 20% of M = P β 30 0.20M = P β 30 β¦(1) Second student: 32% of M = P + 18 0.32M = P + 18 β¦(2) Subtract (1) from (2): 0.32M β 0.20M = (P + 18) β (P β 30) 0.12M = 48 M = 48 / 0.12 = 400 Now from (1): 0.20 Γ 400 = P β 30 80 = P β 30 P = 110 Answer: Maximum marks = 400, Pass marks = 110.
40 Γ 55.96 Γ· 7 β 20% of 699.81 + 63Β = ? - (11479.50 Γ· 7)
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...
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