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

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Math Expert
Joined: 02 Sep 2009
Posts: 58347
At a crafts supply store, the price of a type of decorative string is  [#permalink]

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01 Nov 2018, 01:06
00:00

Difficulty:

35% (medium)

Question Stats:

80% (01:42) correct 20% (01:53) wrong based on 27 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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01 Nov 2018, 01:15
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

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

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01 Nov 2018, 05:26

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

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Re: At a crafts supply store, the price of a type of decorative string is   [#permalink] 01 Nov 2018, 05:26
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