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The ratio of two quantities is 3 to 4. If each of the
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Updated on: 24 Mar 2012, 00:20
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The ratio of two quantities is 3 to 4. If each of the quantities is increased by 5, what is the ratio of these two new quantities? A. 3/4 B. 8/9 C. 18/19 D. 23/24 E. It cannot be determined from the information given.
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Originally posted by calreg11 on 23 Mar 2012, 20:16.
Last edited by Bunuel on 24 Mar 2012, 00:20, edited 1 time in total.
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Re: The ratio of two quantities is 3 to 4. If each of the
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Re: The ratio of two quantities is 3to4
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23 Mar 2012, 22:47
calreg11 wrote: The ratio of two quantities is 3to4.If each of the quantities is increased by 5, what is the ratio of these two new quantities?
a. 3/4 b. 8/9 c. 18/19 d. 23/24 e. It cannot be determined with the information given. let the actual ratio be 3k/4k, increase numerator and denominator by 5 => 3k+5/4k+5 Until the value of k is unknown we can not determine the actual ratio. OR let the actual be 3/4. After increasing 5 => 8/9 let the actual be 6/8. After increasing 5 => 11/13 Therefore without actual quantities we cannot determine the actual ratio. Answer is E. Hope this helps.
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Re: The ratio of two quantities is 3 to 4. If each of the
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21 Jun 2013, 00:45
Bunuel wrote: calreg11 wrote: The ratio of two quantities is 3 to 4. If each of the quantities is increased by 5, what is the ratio of these two new quantities?
A. 3/4 B. 8/9 C. 18/19 D. 23/24 E. It cannot be determined from the information given. You can solve this question if you look at it conceptually: if the two numbers are 3 and 4 then adding 5 to each number will have a huge impact on the ratio but if the two numbers are 3,000,000 and 4,000,000 then adding 5 to each number will have very little impact on the ratio. So, the new ratio cannot be determined from the information given. Answer: E. Bunuel do you think that such question could still appear during the exam ?? just to know
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Re: The ratio of two quantities is 3 to 4. If each of the
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21 Jun 2013, 00:48
carcass wrote: Bunuel wrote: calreg11 wrote: The ratio of two quantities is 3 to 4. If each of the quantities is increased by 5, what is the ratio of these two new quantities?
A. 3/4 B. 8/9 C. 18/19 D. 23/24 E. It cannot be determined from the information given. You can solve this question if you look at it conceptually: if the two numbers are 3 and 4 then adding 5 to each number will have a huge impact on the ratio but if the two numbers are 3,000,000 and 4,000,000 then adding 5 to each number will have very little impact on the ratio. So, the new ratio cannot be determined from the information given. Answer: E. Bunuel do you think that such question could still appear during the exam ?? Hard to say... Are you asking because of option E?
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Re: The ratio of two quantities is 3 to 4. If each of the
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Re: The ratio of two quantities is 3 to 4. If each of the
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22 Jun 2013, 01:37
carcass wrote: Yes. Basically I know that when you encounter a question where option E is among, then it is never the answer (or at least this is the common place)
the reason is that : iof gmat ask you a question says "is impossible to answer" could be to simple, so a trap answer......for this reason I am asking your opinion about. This question is marked as 'from Official guide' though.



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Re: The ratio of two quantities is 3 to 4. If each of the
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01 Oct 2013, 23:58
calreg11 wrote: The ratio of two quantities is 3 to 4. If each of the quantities is increased by 5, what is the ratio of these two new quantities?
A. 3/4 B. 8/9 C. 18/19 D. 23/24 E. It cannot be determined from the information given. I have a small doubt : Cant the answer be 2 . As if we originally take the numbers 3 and 4 which satisfies the ratio of 2 quantities be 3:4 and the ratio of increased quantities be 8/9. I was trying to solve the question without reading the answer choices ans when I find out I cannot solve it . I try to follow hit and trial and 8/9 is there in the options and answered B. Can any one clear this please ? Regards, Abhinav 580 to 700 + in one month difficult but not impossible
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Re: The ratio of two quantities is 3 to 4. If each of the
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02 Oct 2013, 02:02
abhinav11 wrote: calreg11 wrote: The ratio of two quantities is 3 to 4. If each of the quantities is increased by 5, what is the ratio of these two new quantities?
A. 3/4 B. 8/9 C. 18/19 D. 23/24 E. It cannot be determined from the information given. I have a small doubt : Cant the answer be 2 . As if we originally take the numbers 3 and 4 which satisfies the ratio of 2 quantities be 3:4 and the ratio of increased quantities be 8/9. I was trying to solve the question without reading the answer choices ans when I find out I cannot solve it . I try to follow hit and trial and 8/9 is there in the options and answered B. Can any one clear this please ? Regards, Abhinav 580 to 700 + in one month difficult but not impossible But if the numbers are different, say 6 and 8, then the new ratio will also be different. Thus you cannot say for sure that the numbers are 3 and 4. Check here a solution: theratiooftwoquantitiesis3to4ifeachofthe129569.html#p1064455
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Re: The ratio of two quantities is 3 to 4. If each of the
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28 Oct 2014, 00:12
Say the quantities are 3x & 4x There ratio would be \(\frac{3x}{4x} = \frac{3}{4}\) After adding 5 to each, new ratio is \(\frac{3x+5}{4x+5}\) Answer = E
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Re: The ratio of two quantities is 3 to 4. If each of the
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14 Jan 2015, 15:27
Hey,
I also started in the same way as Paresh, but giving different values to the quantities; I then tried to find the actual quantities, like this:
x/y = 3/4 4x=3y x=3y/4
Then, the new ratio will be: (x+5)/(y+5), here I substitued the above value for x: (3y/4+5) / (y+5) (3y+20)/(4y+20) since y is in any case y, then we add the same, so the ratio of 3/4 actually corresponds to the quantities.
Then, if we add 5 to each it would be 8/9.
I don't know if this makes any sense at all. But, we know that the 2 quantities cannot be the same. So, why are we using the same values (let's say x) above?



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Re: The ratio of two quantities is 3 to 4. If each of the
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14 Jan 2015, 17:54
pacifist85 wrote: Hey,
I also started in the same way as Paresh, but giving different values to the quantities; I then tried to find the actual quantities, like this:
x/y = 3/4 4x=3y x=3y/4
Then, the new ratio will be: (x+5)/(y+5), here I substitued the above value for x: (3y/4+5) / (y+5) (3y+20)/(4y+20) since y is in any case y, then we add the same, so the ratio of 3/4 actually corresponds to the quantities.
Then, if we add 5 to each it would be 8/9.
I don't know if this makes any sense at all. But, we know that the 2 quantities cannot be the same. So, why are we using the same values (let's say x) above? Ratios are pure numeric. For example, the ratio of 4 kg mangoes to 8 kg oranges = 1:2 Putting the same variable (as I did) is just for convenience
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