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At a crafts supply store, the price of a type of decorative string is

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At a crafts supply store, the price of a type of decorative string is  [#permalink]

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New post 01 Nov 2018, 00:06
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A
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C
D
E

Difficulty:

  25% (medium)

Question Stats:

71% (01:23) correct 29% (01:05) wrong based on 17 sessions

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At a crafts supply store, the price of a type of decorative string is c cents per foot. At this rate, what would be the price, in dollars, of y yards of this string?


A. cy/300

B. 100/(3cy)

C. 3y/(100c)

D. 3cy/100

E. 300/cy

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Re: At a crafts supply store, the price of a type of decorative string is  [#permalink]

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New post 01 Nov 2018, 00:15
Bunuel wrote:
At a crafts supply store, the price of a type of decorative string is c cents per foot. At this rate, what would be the price, in dollars, of y yards of this string?


A. cy/300

B. 100/(3cy)

C. 3y/(100c)

D. 3cy/100

E. 300/cy


1 yard = 3 feet

y yards = 3*y feet

1 foot cost = c cents
3y feet cost = c*3y cents = 3cy/100 dollars

Answer: Option D
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Re: At a crafts supply store, the price of a type of decorative string is  [#permalink]

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New post 01 Nov 2018, 04:26

Solution


Given:
    • The price of a type of decorative string = c cents/foot

To find:
    • The price of y yards of this string, in dollars

Approach and Working:
    • 1 yard = 3 foot
      o Implies, y yards = 3y foot

    • Price of y yards of string = 3y * c cents = \(\frac{3cy}{100}\) dollars

Hence, the correct answer is Option D

Answer: D

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Re: At a crafts supply store, the price of a type of decorative string is &nbs [#permalink] 01 Nov 2018, 04:26
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