If the mean of the following distribution is 68, find the value of (9x + 2y). [Table — class: 0-20 / 20-40 / 40-60 / 60-80 / 80-100 / total; frequency: 4 / 10 / x / 2 / y / 60]
Subject: Mathematics | Topic: Statistics | Difficulty: MEDIUM
Options
- (A) 138
- (B) 137
- (C) 156
- (D) 151
Verified Answer
Option (D): 151
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