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If 55 percent of the people who purchase a certain product a

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If 55 percent of the people who purchase a certain product a [#permalink] New post 18 Jun 2018, 09:04
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If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase the product to the number of males who purchase the product?

A. \(\frac{11}{9}\)

B. \(\frac{10}{9}\)

C. \(\frac{9}{10}\)

D. \(\frac{9}{11}\)

E. \(\frac{5}{9}\)
[Reveal] Spoiler: OA

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Re: If 55 percent of the people who purchase a certain product a [#permalink] New post 28 Jun 2018, 12:02
Carcass wrote:
If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase the product to the number of males who purchase the product?

A. \(\frac{11}{9}\)

B. \(\frac{10}{9}\)

C. \(\frac{9}{10}\)

D. \(\frac{9}{11}\)

E. \(\frac{5}{9}\)



Two box matrix

Let p be purchased and ~p be not purchased.

p ~p

M 45 55

F 55 45


Ration F / M (purchased ) = 55/45 = 11/9.

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Re: If 55 percent of the people who purchase a certain product a [#permalink] New post 28 Jun 2018, 12:34
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Carcass wrote:
If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase the product to the number of males who purchase the product?

A. \(\frac{11}{9}\)

B. \(\frac{10}{9}\)

C. \(\frac{9}{10}\)

D. \(\frac{9}{11}\)

E. \(\frac{5}{9}\)


Here for easy calculation let us take the total no. of people who purchased the product = 100

so Total no. of female purchased the product = 55% of Total = 55% * 100 = 55

so the total no. of male purchased the product = 100 - 55 =45

Therefore the ratio of \(\frac{female}{male}\)= \(\frac{55}{45}\) = \(\frac{11}{9}\)
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Re: If 55 percent of the people who purchase a certain product a   [#permalink] 28 Jun 2018, 12:34
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