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Alternate (Conventional) Solution



Given:
    • Previously length of a foot = 10 inch
    • Presently length of a foot = 12 inch

To find:
    • What should be the length in present, of a former 300-foot fence

Approach and Working:
If we assume the present length of the former 300-foot fence is x, then we can write
    • 12 * x = 10 * 300
    Or, x = \(\frac{10 * 300}{12}\) = 250

Hence, the correct answer is option A.

Answer: A
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Bunuel
In a certain ancient kingdom, the length of a foot was the length of the current king’s foot. If the newly crowned monarch had a 12 inch foot as opposed to the 10 inch foot of his predecessor, a formerly 300 foot fence would now have a length of how many feet? (Assume that the length of an inch remains constant.)

(A) 250
(B) 302
(C) 350
(D) 360
(E) 400


Since the length of an inch remains constant, let’s convert the two “foot” systems to inches.

Now, since each old foot is 10 inches, 300 old feet = 300 x 10 = 3000 inches. Since each new foot is 12 inches, we see that 3000 inches = 3000/12 = 250 new feet.

Answer: A
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Hi,
I did not get the question.
As well the solution.

What is the relation between king's foot and fence foot (only said that king's foot=length of foot) and also I did not get (Assume that the length of an inch remains constant.)
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No need for computations/arithmetic. It has to be less than 300, and answer choice A is the only answer choice that is less than 300.
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