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# The table above shows the amount of waste material, in tons

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Manager
Joined: 30 Apr 2009
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Kudos [?]: 43 [1] , given: 9

The table above shows the amount of waste material, in tons [#permalink]  01 Nov 2009, 12:13
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Difficulty:

45% (medium)

Question Stats:

61% (02:24) correct 39% (01:29) wrong based on 240 sessions
Country ---Amount Recycled---------Amount Disposed of
A------------16,700-------------------- 142,800

B-------------8,800----------------------48,000

C------------13,000----------------------51,400

D-------------3,900----------------------20,300

E-------------3,300----------------------16,200

The table above shows the amount of waste material, in tons, recycled by each of five counties in a single year and the amount of waste material, also in tons, that was disposed of in landfills by the five counties in that year. Which county had the lowest ratio of waste material disposed of to waste material recycled in the year reported in the table?

A. A
B. B
C. C
D. D
E. E
[Reveal] Spoiler: OA

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Math Expert
Joined: 02 Sep 2009
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Kudos [?]: 40918 [1] , given: 5576

Re: GMAT Prep 2 [#permalink]  01 Nov 2009, 13:22
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Country ---Amount Recycled---------Amount Disposed of
A------------16,700-------------------- 142,800

B-------------8,800----------------------48,000

C------------13,000----------------------51,400

D-------------3,900----------------------20,300

E-------------3,300----------------------16,200

The table above shows the amount of waste material, in tons, recycled by each of five counties in a single year and the amount of waste material, also in tons, that was disposed of in landfills by the five counties in that year. Which county had the lowest ratio of waste material disposed of to waste material recycled in the year reported in the table?

A. A
B. B
C. C
D. D
E. E

Question asks to determine lowest ratio of amount disposed / amount recycled.

(A) 142,800 / 16,700 = ~ 8 - 9

(B) 48,000 / 8,800 = ~ 6

(C) 51,400 / 13,000 = ~4

(D) 20,300 / 3,900 = ~ 5

(E) 16,200 / 3,300 = ~ 5

Answer: C.

My advice is before doing calculations estimate the numbers and start with the easiest. No need for exact numerical values, so good approximation will work in this case.
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Concentration: Strategy, Marketing
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Kudos [?]: 781 [2] , given: 48

ratio [#permalink]  01 Apr 2012, 09:00
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such questions do not ask you to precisely calculate the numbers, thereby asking you to rather estimate.

a) $$\frac{143}{17}$$ ~some big number

b) $$\frac{48}{9}$$ ~ 5+

c) $$\frac{51}{3}$$ ~4

d) $$\frac{20}{4}$$ ~5

e) $$\frac{16}{3}$$ ~5

C is the lowest and is the correct ans.
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Math Expert
Joined: 02 Sep 2009
Posts: 27168
Followers: 4225

Kudos [?]: 40918 [0], given: 5576

Re: The table above shows the amount of waste material, in tons [#permalink]  24 Jun 2013, 03:04
Expert's post
Bumping for review and further discussion*. Get a kudos point for an alternative solution!

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Intern
Joined: 03 Jul 2013
Posts: 1
Location: Sweden
Concentration: Finance, Leadership
GPA: 3.62
WE: Consulting (Consumer Products)
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Kudos [?]: 5 [0], given: 41

Re: The table above shows the amount of waste material, in tons [#permalink]  03 Sep 2013, 05:13
Hello members,

Since the purpose of this question is to practise estimation, I will explain here an interesting way. Start by multiplying denominator by 10 and see if numerator is greater than or less than denominator multiplied by 10. If numerator is less, half the (denominator*10) and see if it less or greater than the new numerator .

[162/33] , here 33x10=330, 330>162, 330/2=165, 165>162 (this means that numerator is around 4 times the denominator)

[203/39], here 39x10=390, 390>203, 390/2=195, 195<203 (this means that numerator is more than 5 times denominator)

[514/130], here 130x10=1300, 1300>514, 1300/2=650, 650 >514 (this means that numerator is less than 5 times and infact a little calculation will show that it is less than 4 times the numerator)

[480/88], here 88x10=880, 880>480, 880/2=440, 440<480 (this means that numerator is more than 5 times the denominator)

[1428/167], here 167x10=1670, 1670>1428, 1670/2=835, 835 < 1428 (this means that numerator is much more than 5 times the denominator)

By finding this strategy, we can see that [514][/130] yields the lowest fraction.
Intern
Joined: 14 Jul 2014
Posts: 6
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Kudos [?]: 1 [0], given: 143

Re: The table above shows the amount of waste material, in tons [#permalink]  21 Jul 2014, 10:35
Hi all,

Could someone help me with the phrasing?
The question asks for the lowest ratio ... yet the right aswer is the highest ratio.
I mean for A: there is 9:1 ... 9 waste to 1 recycled
for C: there is 3:1 ... 3 waste to 1 recycled

I would assume that the higher number (9/1=9; 3/1=3) would mean a lower ratio.
If you try to make sense of the ratio than the ratio is high e.g. 1:2 or 1:10 etc... the higher the recycled part the higher the ratio is.

Thanks
Math Expert
Joined: 02 Sep 2009
Posts: 27168
Followers: 4225

Kudos [?]: 40918 [0], given: 5576

Re: The table above shows the amount of waste material, in tons [#permalink]  21 Jul 2014, 10:46
Expert's post
bigzoo wrote:
Hi all,

Could someone help me with the phrasing?
The question asks for the lowest ratio ... yet the right aswer is the highest ratio.
I mean for A: there is 9:1 ... 9 waste to 1 recycled
for C: there is 3:1 ... 3 waste to 1 recycled

I would assume that the higher number (9/1=9; 3/1=3) would mean a lower ratio.
If you try to make sense of the ratio than the ratio is high e.g. 1:2 or 1:10 etc... the higher the recycled part the higher the ratio is.

Thanks

Lowest ratio is lowest number.
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Re: The table above shows the amount of waste material, in tons   [#permalink] 21 Jul 2014, 10:46
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# The table above shows the amount of waste material, in tons

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