The product of Layas’s age before 5 years and after 8 years is 30. F

1.	The product of Layas’s age before 5 years and after 8 years is 30. Find the present age.
Answer» Let x be the present age of Laya (x – 5)(x + 8) = 30 x² – 3x – 40 = 30, x² – 3x – 70 = 0 \(x=\frac{-3\,\pm\sqrt{9\,+\,280}}{2}=\frac{-3\,\pm\,17}{2}=7,-10\) Present age of Laya = 7

The product of Layas’s age before 5 years and after 8 years is 30. Find the present age.

Answer»

Let x be the present age of Laya

(x – 5)(x + 8) = 30

x² – 3x – 40 = 30,

x² – 3x – 70 = 0

\(x=\frac{-3\,\pm\sqrt{9\,+\,280}}{2}=\frac{-3\,\pm\,17}{2}=7,-10\)

Present age of Laya = 7

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The product of Layas’s age before 5 years and after 8 years is 30. Find the present age.

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