Jolene began building a picket fence by planting stakes in a row; the

Question

Jolene began building a picket fence by planting stakes in a row; the stakes were evenly spaced. After planting the first 10 stakes, Jolene measured the length of the row and found that the row was 27 feet long. She continued the row by planting another 10 stakes, then measured the length of the entire row. How many feet long was the row of stakes Jolene had planted?

(A) 37
(B) 54
(C) 57
(D) 60
(E) 81

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dcarrehe · Answer

I say pretty surely it's this way:

If stakes are placed evenly spaced and total of 10 stakes equal 27 feet, Space between stakes = 3 ft

Then if adding another 10 stakes, you must include the additional space between stake 10 - 11 = +3ft

So, 27ft + 3ft + 27ft = 57ft. Answer  C

saynchalk · Answer

Great question, where is it from?

Bunuel · Answer

As indicated in the tags, it's from Princeton Review.

stne · Answer

IF we have  10  stakes then total spaces between the stakes will be  9.

Hence  10  stakes and  9  spaces together measure  27  feet.

You have ignored the width of the stakes? Why?

How can we find the width of the space between the stakes, unless we are told to ignore the width of the stakes?

The way I did was, chose the closest answer to  54.

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Jolene began building a picket fence by planting stakes in a row; the

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Jolene began building a picket fence by planting stakes in a row; the

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