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Dan completes a 3 part exam as follows

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Dan completes a 3 part exam as follows [#permalink] New post 21 Feb 2013, 07:05
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Dan completes a 3 part exam as follows. He complete sections A in 12 minutes and takes equal time to complete the remaining sections. What is the ratio of time spent on section C to section A if total duration is 1 hour.

A. 1:3
B. 1:2
C. 2:1
D. 3:1
E. 4:1
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Re: Dan completes a 3 part exam as follows [#permalink] New post 21 Feb 2013, 07:11
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antoxavier wrote:
Dan completes a 3 part exam as follows. He complete sections A in 12 minutes and takes equal time to complete the remaining sections. What is the ratio of time spent on section C to section A if total duration is 1 hour.

A. 1:3
B. 1:2
C. 2:1
D. 3:1
E. 4:1


Section A = 12 minutes;
Section B = Section C = 24 minutes (12+24+24=60 minutes).

C/A=24/12=2/1.

Answer: C.
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Re: Dan completes a 3 part exam as follows [#permalink] New post 23 May 2013, 04:30
The wording can be a bit tricky because at first when I read it, I understood that A=12 mins, B+C=12 mins. But then again A+B+C must equal 60 mins. Therefore, 60-A= 60-12=48. We know that B+C=48 and that B=C ---->each is 24.


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Re: Dan completes a 3 part exam as follows [#permalink] New post 08 Mar 2014, 19:07
Here's how my brain handled this one,

Step 1 --> Set up the equation.

A + B + C = Total

Based off the question we can infer the following,

B + C = 60 - 12 = 48, thus B = 24, C = 24.

12 minutes is given to us, and we know 60 minutes are in an hour.

So... 12 + 24 + 24 = 60.

Step 2 --> Use data to relate to what the question is looking for.

They are asking for the ratio of C to A. When we think ratio, think first term as a numerator, second term as denominator. So in this case C/A (C:A), or 24/12 (24/12) which simplifies to 2/1 (or 2:1).

Answer is (C). :-D
Re: Dan completes a 3 part exam as follows   [#permalink] 08 Mar 2014, 19:07
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