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The sum of a non - zero number and twenty times its reciprocal is 9. What is the number?1). -52). 33). -34). 5 |
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Answer» LET the number be y According to the PROBLEM statement ⇒ y + 20/y = 9 ⇒ y2 - 9y + 20 = 0 ⇒ (y - 5) (y - 4) = 0 the REQUIRED number is 5 which satisfies the above given condition ∴ the value of required fraction is 5 |
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