In a debate competition, the judges decide that 20 per cent of the total marks would be given for accent and presentation. 60 per cent of the rest are reserved for subject matter and the rest for rebuttal. If this means 8 marks for rebuttal, then find the total marks.
Total marks = 25
Let total = x.
Accent = 20% of x.
Remaining = 0.8x.
Rebuttal = 40% of 0.8x = 0.32x.
Given 0.32x = 8 ⇒ x = 25.