NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 7: Comparing Quantities - Problems and SolutionsQuestion 130
Class 7 - Mathematics - Unit 7: Comparing Quantities - Problems and Solutions
Question. 130
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.
Answer:
Total marks = 25
Detailed Answer with Explanation:
Let total = x.
Accent = 20% of x.
Remaining = 0.8x.
Rebuttal = 40% of 0.8x = 0.32x.
Given 0.32x = 8 ⇒ x = 25.