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What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t

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What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t  [#permalink]

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New post 10 Apr 2018, 06:53
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

88% (01:08) correct 12% (00:30) wrong based on 36 sessions

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Re: What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t  [#permalink]

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New post 10 Apr 2018, 07:11
Bunuel wrote:
What is the ratio of r to s?

(1) r = 3(s + 1)
(2) The ratio of 1.2r to 3.6s is 3 to 2.


we are looking for the ratio of r to s. In order to find out the ratio we have to know the value of r and s.

statement 1: r=3(s+1). not sufficient as we don't know the value of s here.
statement 2: 1.2r / 3.6 s = 3/2

12r/36s=3/2
r/s=9:2

so, the correct answer will be B.
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Re: What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t  [#permalink]

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New post 10 Apr 2018, 07:33
(1) r = 3(s + 1)
We cant find the ration here, because it does depend on the actual value of r or s.
For example if s = 1, r = 6, hence r:s = 6
whereas, if s= 100, r = 303 , ratio r:s = 303:100
Hence insufficient.

(2) The ratio of 1.2r to 3.6s is 3 to 2.
\(1.2r/3.6s = 3/2\)
\(r/s= 9/2\) . Suffcient.

Answer B
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Re: What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t   [#permalink] 10 Apr 2018, 07:33
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What is the ratio of r to s? (1) r = 3(s + 1) (2) The ratio of 1.2r t

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