1Question
The average (arithmetic mean) of 5, 10, 15 and x is 20. What is the value of x?
1 Mathematics question from the ASF ASI Past Paper 2021 (Batch 1, 28 March 2021). Answers follow the key printed with the paper.
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The average (arithmetic mean) of 5, 10, 15 and x is 20. What is the value of x?