Question
Download Solution PDFThe average of 5, 7, 9, x, 15 is 10 and the average of 17, 8, 19, 16, x, y, 4 is 12. What is the value of y ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
Average = Sum of all terms/Number of terms
Calculation:
⇒ (5 + 7 + 9 + x + 15)/5 = 10
⇒ 50 = 5 + 7 + 9 + x + 15
⇒ x = 14
Now,
⇒ 12 × 7 = 17 + 8 + 19 + 16 + x + y + 4
⇒ 84 = 17 + 8 + 19 + 16 + x + y + 4
⇒ x + y = 20
⇒ y = 20 - 14 = 6
∴ The correct answer is 6.
Last updated on Jun 12, 2025
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