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If any amount is distributed among A ,B and C so that the part of A [#permalink]
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07 Oct 2015, 12:02
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If any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts. A. 1:2:4 B. 1:4:1 C. 8:4:1 D. 2:4:1 E. 4:3:2
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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07 Oct 2015, 12:05
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ske wrote: if any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts.
A. 1:2:4
B. 1:4:1
C. 8:4:1
D. 2:4:1
E. 4:3:2 A=2B, B=4C A:B:C = 2B:B:B/4=8:4:1 => Ans: C



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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07 Oct 2015, 22:27
Hi ske, This question can be solved by TESTing VALUES. Here's how: We're told that A is TWICE B and B is FOUR TIMES C.... IF... C = 2 B = 8 A = 16 We're asked for the ratio of A:B:C....The ratio of these 3 values is... 16:8:2 This reduces to.... 8:4:1 Final Answer: GMAT assassins aren't born, they're made, Rich
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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08 Oct 2015, 02:10
Forget conventional ways of solving math questions. In PS, IVY approach is the easiest and quickest way to find the answer. if any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts. A. 1:2:4 B. 1:4:1 C. 8:4:1 D. 2:4:1 E. 4:3:2 By the assumptions as mentioned we have A=2B and B=4C. So A=2(4C) and we get A=8C. We have, therefore, A:B:C = 8C:4C:C. By cancelling the ratio with C we have 8:4:1. The answer is, therefore, C.
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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10 Feb 2016, 22:26
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A=2B, B=4C A:B:C = 2B:B:B/4=8:4:1 => Ans: C
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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20 Mar 2017, 02:17
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A=2B,
B=4C
A:B:C = 2B:B:B/4=8:4:1
=> Ans: C i will go for c.



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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20 Mar 2017, 04:32
ske wrote: If any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts.
A. 1:2:4
B. 1:4:1
C. 8:4:1
D. 2:4:1
E. 4:3:2 let the part for A,B,C be a,b,c respectively a = 2b or a : b = 2:1 = 8:4 b = 4c or b:c = 4:1 therefore a:b:c = 8:4:1



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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12 Jul 2017, 11:39
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ske wrote: If any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts.
A. 1:2:4
B. 1:4:1
C. 8:4:1
D. 2:4:1
E. 4:3:2 hi ske, it can be lik this A=2B, B=4C A:B:C = 2B:B:B/4=8:4:1 => Ans: C



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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13 Jul 2017, 21:04
Confused. Help!
Given: A = 2B B = 4C
In order to make 'B' equal in both the ratios, we need to multiple the second ration by 2. Therefore, B=4C becomes, 2B = 8C.
(1)  A = 2B (2) 2B = 8C
Combining (1) and (2), we get A:2B:8C.
Evidently, there is no such answer. What am I missing?



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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14 Jul 2017, 07:25
Hi Blackbox, While you've done the proper algebra, you have not properly translated the given equations into the end ratio. Here's a simple example of how the math actually "works": A = 2B This means that A is equal to TWICE B. For example.... IF... B=1, then A=2 IF... B=2, then A=4 IF... B=3, then A=6 Etc. This means that whatever B is, A is DOUBLE that value. Thus, the ratio of A to B is... A:B 2:1 Using that example, and the equations that you've created, what would the ratio of A:B:C equal? GMAT assassins aren't born, they're made, Rich
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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14 Jul 2017, 10:20
Let \(B = x\). \(A = 2x, C = 0.25x\) Ratio of \(A:B:C = 2:1:0.25 = 8:4:1.\) Ans  C.
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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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14 Jul 2017, 11:11
EMPOWERgmatRichC wrote: Hi Blackbox,
While you've done the proper algebra, you have not properly translated the given equations into the end ratio.
Here's a simple example of how the math actually "works":
A = 2B
This means that A is equal to TWICE B.
For example.... IF... B=1, then A=2 IF... B=2, then A=4 IF... B=3, then A=6 Etc.
This means that whatever B is, A is DOUBLE that value. Thus, the ratio of A to B is... A:B 2:1
Using that example, and the equations that you've created, what would the ratio of A:B:C equal?
GMAT assassins aren't born, they're made, Rich I see what are you're trying to convey. So, A:B = 2:1, B:C = 4:1. In order to make an equal proportion of the items, I need to make B = 4 in the first ratio. Therefore, I'd have to multiply the first ratio by 4. Which makes the combined ratio 8:4:1. Thanks mate.



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Re: If any amount is distributed among A ,B and C so that the part of A [#permalink]
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14 Jul 2017, 11:12
TimeTraveller wrote: Let \(B = x\).
\(A = 2x, C = 0.25x\)
Ratio of \(A:B:C = 2:1:0.25 = 8:4:1.\) Ans  C. Thanks TT. Yours was a cool explanation as well.



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If any amount is distributed among A ,B and C so that the part of A [#permalink]
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18 Dec 2017, 04:26
ske wrote: If any amount is distributed among A ,B and C so that the part of A is doubled that of the part of B and part of b is 4 time the part of C .Find the ratio among their parts.
A. 1:2:4
B. 1:4:1
C. 8:4:1
D. 2:4:1
E. 4:3:2 A=2B or [ A/B ]= [2/1] Eq 1B=4C or [ B/C ]= [ 4/1 ] Eq 2 Equate the B's or Multiply Eq 1 by 4 & Multiply Eq 2 by 1A:B:C [ 8:4:1]




If any amount is distributed among A ,B and C so that the part of A
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