If the mean of the following distribution is 64, find the value of (9x + 2y). Class: 0-20, 20-40, 40-60, 60-80, 80-100, total; frequency: 8, 20, x, 6, y, 80. [Printed as a frequency table in the source; linearised row-wise here]
Subject: Mathematics | Topic: Statistics | Difficulty: MEDIUM
Options
- (A) 106
- (B) 99
- (C) 113
- (D) 94
Verified Answer
Option (C): 113
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