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The average of (33, 45, 65 and 80) and (21, 9, 11 and 50) is X and Y respectively. Find the value of 2(X + Y)1). 542). 78.53). 1574). 153 |
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Answer» Average = (sum of ELEMENTS)/(number of elements) The average of (33, 45, 65 and 80) and (21, 9, 11 and 50) is X and Y respectively ⇒ X = (33 + 45 + 65 + 80)/4 ⇒ X = 223/4 ⇒ X = 55.75 ⇒ Y = (21 + 9 + 11 + 50)/4 ⇒ Y = 91/4 ⇒ Y = 22.75 The value of 2(X + Y) = 2(55.75 + 22.75) = 2(78.5) = 157 ∴ The value of 2(X + Y) is 157. |
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