2420.12 – Hen and a Half, Variables


If xx hens lay x+1x + 1 eggs in x+2x + 2 days, how many days will it take x+3x + 3 hens to lay x+5x + 5 eggs?

  1. x(x+2)(x+5)(x+1)(x+3)\frac{x(x + 2)(x + 5)}{(x + 1)(x + 3)}
  2. x(x+1)(x+5)(x+1)(x+3)\frac{x(x + 1)(x + 5)}{(x + 1)(x + 3)}
  3. (x+1)(x+3)(x+5)x(x+2)\frac{(x+1)(x + 3)(x + 5)}{x(x + 2)}
  4. (x+1)(x+3)x(x+2)(x+5)\frac{(x + 1)(x + 3)}{x(x + 2)(x + 5)}
  5. none of the above

Solution

The answer is (a). Consult the table below.

2420_12_solution_4ecaabd428.png