At the end of year X, automobile installment credit accounte : GMAT Problem Solving (PS)
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# At the end of year X, automobile installment credit accounte

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At the end of year X, automobile installment credit accounte [#permalink]

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11 Nov 2013, 12:31
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35% (medium)

Question Stats:

68% (01:00) correct 32% (00:54) wrong based on 346 sessions

At the end of year X, automobile installment credit accounted for 36% of all outstanding consumer installment credit. At that time automobile finance companies extended $57 billion of credit, or 1/3 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time? A. 62 B. 171 C. 475 D. 513 E. 684 Kindly help in solving this! [Reveal] Spoiler: OA Manager Joined: 26 Sep 2013 Posts: 221 Concentration: Finance, Economics GMAT 1: 670 Q39 V41 GMAT 2: 730 Q49 V41 Followers: 4 Kudos [?]: 139 [3] , given: 40 Re: Automobile Installment Credit [#permalink] ### Show Tags 11 Nov 2013, 17:12 3 This post received KUDOS 3 This post was BOOKMARKED ppravin88 wrote: At the end of year X, automobile installment credit accounted for 36% of all outstanding consumer installment credit. At that time automobile finance companies extended$57 billion of credit, or 1/3 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time?

A. 62
B. 171
C. 475
D. 513
E. 684

Kindly help in solving this!

So we're trying to find ALL consumer installment credit, let's call that Q.

So at the end of the year we know that 36% of Q comes from automobile installment credit. So we need to figure out the number for automobile installment credit, and then we can solve for Q. We're told that 57 billion is 1/3 of the automobile installment credit amount. So the full amount of automobile installment credit (in billions) is: 57*3 (since 1/3 of the amount is 57 billion, we multiply by 3 to find the full amount. This gives 171 (billion).

So going back to the stem we know that 36% of outstanding consumer credit (which we are calling Q) comes from automobile credit. So 171 is 36% of what number?

.36*Q=171

Q=171/.36

Q=475

so answer is C. Are you sure that was a 700 level problem?
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Re: At the end of year X, automobile installment credit accounte [#permalink]

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15 Nov 2014, 09:13
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Re: At the end of year X, automobile installment credit accounte [#permalink]

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29 Dec 2014, 18:39
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System of Equations
a = (36/100) c
(1/3) a = 57 --> a = 171

Substitution
171 = (36/100) c
c = (100/36) 171

You now have 2 ways
- You can do the ugly calculation 171/36 * 100
- Or you can notice that 100/36 is slightly smaller than 3. That way 171 * (100/3) will be slightly smaller than 171 * 3.

THE TRAP!
- 171 * 3 is actually 513, the reason why the test makers placed this trap-answer.

- The correct answer will be slightly smaller than 513. Therefore, the correct answer is 475.
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Re: At the end of year X, automobile installment credit accounte [#permalink]

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30 Dec 2014, 20:30
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Total automobile instalment credit = 57*3 = 171

Total consumer instalment credit $$= 171*\frac{100}{36} = 475$$
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Re: At the end of year X, automobile installment credit accounte [#permalink]

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25 Feb 2016, 16:01
The way I minimized the time it took is by saving all the calculations until the end.

I wrote: (57*3)/3*2*3*2 and you'll get 57/12 which the first number when you divide starts with a 4 so I clicked C.
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At the end of year X, automobile installment credit accounte [#permalink]

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22 Jun 2016, 22:08
AccipiterQ wrote:
ppravin88 wrote:
At the end of year X, automobile installment credit accounted for 36% of all outstanding consumer installment credit. At that time automobile finance companies extended $57 billion of credit, or 1/3 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time? A. 62 B. 171 C. 475 D. 513 E. 684 Kindly help in solving this! So we're trying to find ALL consumer installment credit, let's call that Q. So at the end of the year we know that 36% of Q comes from automobile installment credit. So we need to figure out the number for automobile installment credit, and then we can solve for Q. We're told that 57 billion is 1/3 of the automobile installment credit amount. So the full amount of automobile installment credit (in billions) is: 57*3 (since 1/3 of the amount is 57 billion, we multiply by 3 to find the full amount. This gives 171 (billion). So going back to the stem we know that 36% of outstanding consumer credit (which we are calling Q) comes from automobile credit. So 171 is 36% of what number? .36*Q=171 Q=171/.36 Q=475 so answer is C. Are you sure that was a 700 level problem? 1/3 extended, 3+1= total 4 parts, 1 part=57 billion then total automobile installment credit=45*4=228 billion , instead of 57*3 anybody pls help me to make it clear. _________________ please press "+1 Kudos" if useful Senior Manager Status: I don't stop when I'm Tired,I stop when I'm done Joined: 11 May 2014 Posts: 435 Location: Bangladesh Concentration: Finance, Leadership GPA: 2.81 WE: Business Development (Real Estate) Followers: 66 Kudos [?]: 808 [0], given: 220 Re: At the end of year X, automobile installment credit accounte [#permalink] ### Show Tags 23 Jun 2016, 01:21 jasimuddin wrote: AccipiterQ wrote: ppravin88 wrote: At the end of year X, automobile installment credit accounted for 36% of all outstanding consumer installment credit. At that time automobile finance companies extended$57 billion of credit, or 1/3 of the automobile installment credit. How many billion dollars of consumer installment credit was outstanding at that time?

A. 62
B. 171
C. 475
D. 513
E. 684

Kindly help in solving this!

So we're trying to find ALL consumer installment credit, let's call that Q.

So at the end of the year we know that 36% of Q comes from automobile installment credit. So we need to figure out the number for automobile installment credit, and then we can solve for Q. We're told that 57 billion is 1/3 of the automobile installment credit amount. So the full amount of automobile installment credit (in billions) is: 57*3 (since 1/3 of the amount is 57 billion, we multiply by 3 to find the full amount. This gives 171 (billion).

So going back to the stem we know that 36% of outstanding consumer credit (which we are calling Q) comes from automobile credit. So 171 is 36% of what number?

.36*Q=171

Q=171/.36

Q=475

so answer is C. Are you sure that was a 700 level problem?

1/3 extended, 3+1= total 4 parts, 1 part=57 billion then total automobile installment credit=45*4=228 billion , instead of 57*3

anybody pls help me to make it clear.

IMO,You missed a point

The question asked you to find the amount of consumer installment credit NOT the amount of automobile installment credit

According to question,

$$\frac{1}{3}$$ of automobile installment credit=$57 billion,so total automobile installment credit=57*3=$171 billion

So,$171 billion=36% of consumer installment credit,Now we can calculate to find consumer installment credit=$$\frac{171*100}{36}$$=475 Correct Answer C _________________ Please Press +1 Kudos,If it helps Sentence Correction-Collection of Ron Purewal's "elliptical construction/analogies" for SC Challenges Re: At the end of year X, automobile installment credit accounte [#permalink] 23 Jun 2016, 01:21 Similar topics Replies Last post Similar Topics: 2 If$2.00 were invested at 4% annual interest at the end of 8 years the 4 17 Jan 2017, 07:14
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