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The average of 23, 34, x, 21, 19 and 18 is 21. What is the value of x?1). 92). 103). 114). 12 |
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Answer» The average of 23, 34, X, 21, 19 and 18 = 21 $(\RIGHTARROW \;\frac{{23 + 34 + x + 21 + 19 + 18}}{6} = 21)$ ⇒ 23 + 34 + x +21 + 19 + 18 = 21 × 6 ⇒115 + x = 126 ⇒ x = 11 |
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