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What is value of x if average of 5x, 3y and 7x is 96 and y is 4 times of x.1). 122). 243). 984). 96 |
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Answer» We know the formula: $({\rm{Average}} = {\rm{}}\FRAC{{{\rm{Sum\;of\;VALUES}}}}{{{\rm{NUMBER\;of\;values}}}})$ ⇒ y = 4x The given average $(\Rightarrow {\rm{}}\frac{{5{\rm{x}} + 3{\rm{y}} + 7{\rm{x}}}}{3}{\rm{}} = {\rm{}}96)$ ⇒ 5x + 3(4x) + 7x = 96 × 3 ⇒ 24X = 96 × 3 ⇒ x = 288/24 = 12 ∴ The value of x is 12. |
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