Question

Express the given formula in term of x.

$\frac{\frac{1}{x}+\frac{1}{y}}{\frac{1}{f}}=(2+4t)$

• A. (fy)/(2y + 4fy - f)
• B. (2fy)/(2y + 4fy + f)
• C. (fy)/(2y - 4ty - f)
• D. (fy)/(2y - 2fy - f)

Answer 1

The correct option is A

(fy)/(2y + 4fy - f)

$\frac{\frac{1}{x}+\frac{1}{y}}{\frac{1}{f}}=2+4t\frac{1}{x}+\frac{1}{y}=(2+4t)\frac{1}{f}\frac{1}{x}=(2+4t)\frac{1}{f}-\frac{1}{y}\frac{1}{x}=\frac{2y+4ty-f}{fy}x=\frac{fy}{2y+4ty-f}$